So the first request for this feature was five years ago? Someone's not listening to their customers...
I use Evernote to take meeting notes, and recently I've noticed that Evernote has started making some "interesting" autocorrect choices. I've turned off the MacOS autocorrect, and it seems to have gone away (I can better determine what I meant in my notes, from the ahem, questionable, spelling, whereas before it was quite difficult following what was often a very odd choice of word).