No, my anatomy isn't mostly-correct. Far from. But I don't think my style prevents me from learning anatomy. In fact, my style would probably benefit from more practice. That's what I was trying to point out, in response to Zach's always-drawing-similar-faces situation.
I mean, I often draw similar things, too, but that's because I intend to. The other day I actually pulled off a pretty decent giraffe, including strangely-jointed legs, if you must know! Definitely something I'd never done before, and it doesn't look anything like the foxes and stuff that normally spawn from my digital pen. If I have to draw something that doesn't look like a cartoony white fox, I can pull it off.
Besides, even my cartoonish... style... is firmly rooted in reality. Now and then I do check up on anatomical guides and such and refine my own pre-lineart guidelines to be more true to life. I start out all my humanoid drawings with one of those funny and useful skeleton-looking things. You know, lines for limbs, balls for joints, measuring proportions while I try to find a decent pose, that kinda stuff. Muscles and such, I'm not so hot on. And one thing I know I don't get enough practice with is human faces. But honestly, I don't see myself needing that kind of skills in the near future. I'm happy with what I'm able to do on paper right now, and I don't strive for anything more. Not yet, at least.