You're completely right, and as I touch on at the beginning of my last post, I do think Braid is a milestone in game design. But since we put this game on a pedestal as the Holy Grail of indie games, I'm scared people will avoid any sort of criticism of it at all.
And yes, this post is a bit nit-picky. The 'A' button box has a total screen time of maybe 3 seconds. But unlike the rest of the game where Blow treats the player like an intelligent adult, this is a part where Blow assumes the player is stupid. It seems to undermine the rest of his design philosophy.