That's a pretty narrow and unsupportable interpretation of telepathy. Characters who get headaches from being around too many other minds, or have to learn to establish mental shields in order to keep other thoughts out, or who complain that their friends are broadcasting their emotions too loudly, suggest that Marvel telepathy is far more comparable to vision or hearing - learning to ignore or tune a thing out or to focus more closely on it is not just consistent with canon, but consistent with the way all other human senses work.