For example, the vast majority of people who claim to vegetarians, are not, but claim to vegetarians for the status.

Got a cite for that? Vegetarianism might be a questionable indicator of nonconformity, but I'd be much more willing to believe that vegetarianism's become common enough in a broad spectrum of subcultures to be disqualified as such than that a vast, or even a simple, majority of professed vegetarians aren't actual vegetarians. Perhaps modulo some wiggle room for culturally mandated meat-eating, like Thanksgiving turkeys in the US.

Now that I think about it, actually, it's a non sequitur either way. The hypocrisy/sincere profession ratio of a feature doesn't tell us much of anything about how acceptable it is in the mainstream: I'd expect many more people to claim to have Mafia ties than do in fact, but membership in a criminal fraternity is almost by definition nonconformist!