It was not his place to tackle the problem.

Then whose was it? I’m just glad it was addressed at all. The other solution would be to simply ignore it. Ending a popular show because an earlier episode decades earlier made a silly rule is simply nonsensical.

Whoever the writer would’ve been for the thirteenth incarnation is the one who would’ve tackled the problem, but they grew impatient with this and did it with Matt Smith who was as stated the Eleventh Doctor before they retconned it.

I guess we agree, then. Moffat wanted to get rid of all the longstanding nagging problems while he could. I highly doubt the BBC itself knows the show well enough to have asked for the 12-regeneration rule to be solved, again if it were up to them it would probably have just been ignored.