Apocalypse World does say to be clear about which moves you’re trying to trigger (with an example of correcting it after a misread by the MC). But as far as goals and outcomes I think you’re right. As a player I say what I want anyway, so everyone can play to that (whether helping or hindering for drama). It’s usually just more fun for the players/audience to know what’s up.

I do think there’s no problem in the situation when the GM is cagey but the player is transparent. So go forth to convention games and spill your guts. (Just be prepared for nobody to listen.)