The thing about Moffat, I suppose, is he's under economic demands like any other producer. No, he could choose not to say stupid shit out loud and in public (and frontier justice forced his Twitter shutdown thanks to his conduct), but the fact is that youth sells and it's been under the last two young actors (and their interactions with female companions, for good or ill) that "Doctor Who" has gone from a known-but-still-obscure show to a worldwide earner in merchandise, DVD sales, and syndication. He sort of can't help that this is what a LOT of new, younger, spending fans seem to want ... any more than T&T could largely help that a lot of the POTC fans were rabid over J/E above all else.

/shrug