I've always been a details guy when it comes to continuity, and aside from anything else I like to look at long term stories as a puzzle; when there is a mystery on-screen, there should be answer X to it which is a logical culmination of the situation as seen.
I like to think about X, and I do get rattled when it turns out to be Y rather than X, where Y is something not logically connected in the same way. To me, that undermines the premise. The spacesuit coming out of the water, for example, was very cool, and in that respect The Impossible Astronaut was a great episode, but the payoff was random, which is a shame.
It's just a stylistic aspect of Moffat's approach that I'm not big on- but it only bothers me,. It doesn't kill my enjoyment or anything. And he certainly gets marks for at least getting those explanations in there.
It's not unlike the cliffhanger problem- it's one thing to make a good cliffhanger (like Tennant being exterminated and regenerating), but another to make a good cliffhanger that also resolves satisfactorily next week (like Tennant and the weirdness with the hand). In that respect, Moffat actually has the best one of New Who, with his cliffhanger and resolution in The Empty Child and The Doctor Dances.