The Bloody Obvious Position is bloody obviously incorrect when applied to things which actually do depend 100% on innate ability (breathing, for instance).
There are different ways to breath and training can make the way people breath more efficient.
(Continuing the posting of select posts from Slate Star Codex for comment here, as discussed in this thread, and as Scott gave me - and anyone else - permission to do with some exceptions.)
Scott Alexander recently posted about growth mindset, with a clarificatory followup post here. He discussed some possible weaknesses of its advocates - as well as their strength. Here's a quote outlining the positions discussed: