"Number ten once regenerated and kept the same face. I had vanity issues at the time."
All your points are on except I don’t look at this as a Moffat is an arse thing. To be clear, I am definitely not a big fan of all of Stephen Moffat’s writing, but this line was not a bad one. This is the Doctor badmouthing himself, because that is what he often does. He’s making a joke at his own expense. Eleven does this quite a bit. It’s not meant as an attack on Ten, it’s a low level attack on himself, to lighten the mood on a serious subject. The Doctor, Eleven, Ten, and prior, are all the things you wrote but he is not so quick to see it in himself, he hasn’t since at least the Time War.
I would perhaps agree with you if Moffat’s digs at RTD’s era and Ten were limited to this one line. But his dislike of Ten has cropped up at various intervals throughout Eleven’s era. Even just in this episode there was at least one more that I can think of. It occurs during this exchange:
CLARA: Look at you. The three of you. The warrior, the hero, and you.
DOCTOR: And what am I?
CLARA: Have you really forgotten?
DOCTOR: Yes. Maybe, yes.
CLARA: We’ve got enough warriors. Any old idiot can be a hero.
DOCTOR: Then what do I do?
CLARA: What you’ve always done. Be a doctor.
This is implying that Ten is just a hero, not “really” the Doctor, like Eleven is. And dismissively implying that Ten is “any old idiot,” i.e., nothing remarkable or special like Eleven, who is truly the Doctor, and truly Doctorish. Which, at the time, I found remarkably insulting. Like he was intentionally pissing all over those of us who love Ten. Telling us that he’s not actually very Doctor-like, and that Eleven is better. Which…bullshit.
And, of course, if you listen to the commentary for Silence in the Library, which is with Tennant, Moffat, and Julie Gardner, Moffat straight-up calls Ten a hormonal teenager—to Tennant’s face. Which, in hindsight, is hilarious, considering that Moffat’s Doctor has the emotional maturity of a blueberry scone.
But anyways, it all goes along with Moffat’s subsequent idea that his era/Doctor is better than Ten—which he has flat out had characters say. Remember this from The Bells of St John?
CLARA: What chapter are you on?
CLARA: Eleven is the best. You’ll cry your eyes out.
Personally, I generally find Ten’s episodes much sadder than Eleven’s. Ten was six years old when he died—Eleven was over a thousand. One was a tragic life cut much too short (I mean, six is young for humans, and we don’t have anything like the lifespans of Time Lords), and filled with one terrible, heart-breaking loss after another, including that of the love of his life/regeneration after he only got to spend an all-too-brief two years with her. So many terrible tragedies over a such a short period of time that, in The Waters of Mars, it nearly drove Ten insane. The other, in contrast, was a long and full life, complete with a happy, fulfilling marriage spanning several hundred years and a small family, the Ponds. Granted, the Ponds did all eventually die, but he got hundreds more years with them than Ten got with any of his companions. And he even, at the end, got to live the slow life Ten always wanted. One is definitely sadder than the other, IMHO.
Then there’s just the fact that Moffat has unwritten or undermined nearly all of RTD’s ongoing storylines, like the destruction of Gallifrey, simply because he doesn’t think they are Doctorish, or because he just dislikes them…
“I remember thinking, ‘what was the most important occasion in the Doctor’s life?’ Obviously it was the day he blew up Gallifrey. Then I tried to imagine what writing that scene would be like, and I thought literally – there’s kids on Gallifrey and he’s going to push the button. He wouldn’t. He wouldn’t. I don’t care what’s at stake, he’s not going to do it. So that was the story – of course he never did that. He couldn’t have. He’s the Doctor, he’s the man who doesn’t do that. He’s defined by the fact that he doesn’t do that. Whatever the cost, he will find another way. So it had to be the story of what really happened that he’s forgotten. Of course he didn’t! He’s Doctor Who. He doesn’t do things like that.”
I disagree pretty vehemently with what he says—it’s predicated on the rather foolish notion that it is always possible to “find another way.” RTD acknowledged that we sometimes can’t avoid making terrible choices, which is true in the lives of the audience, something we can relate to, while Moffat likes to pretend that it’s possible to avoid it altogether. Also, he’s ignoring the fact that the Doctor has made this kind of choice multiple other times, like in Fires of Pompeii, for instance. There were children in Pompeii, and yet the Doctor killed them all in order to save the Earth. Why would the destruction of a single planet be so unimaginable if the entire universe was at stake? Besides, Gallifrey was hardly the first planet he’s destroyed (Skaro, for one), and the Time Lords were not the first species he’s wiped out. He’s even deliberately and knowingly sacrificed the lives of his friends in the past in order to save planets (Love and War). It’s not out of character for the Doctor at all. He does make those kind of choices when he has no alternative. Which is the point, isn’t it? Sometimes he has no alternative.
He makes a similar choice, for instance, in The Day of the Moon, when Moffat had him order humanity to commit genocide against the Silence, who he knew little to nothing about at the time, and who we later discover…are mostly just innocent, harmless priests. Let me just repeat that: Moffat had his Doctor commit genocide against a race of genetically-engineered priests. And make all of humanity complicit in that genocide without their consent. And yet Moffat’s complaining about the far more justifiable destruction of Gallifrey? Of a race of war criminals who had actively destroyed or were complicit in the destruction of countless planets (the Gelths’, the Autons’, and probably many many more) and innumerable races? And nearly deliberately destroyed the entire universe as well?
So yeah, Moffat generally does not seem to like Ten or RTD’s era much. He’s also got an extraordinarily poor moral compass.