This really shouldn't be so important to us, but I can understand why it is. It shouldn't be so important because, of all people, we should be the most aware of how random gender stereotypes are and therefore how invalid. We have spent our lives so far restricted by female gender roles based on random societal concepts, so why should we want to swap them for equally random and restrictive male gender roles? We like what we like and that is it.
However, it is important to us because we want to be convincing as men. Having a femmy hobby is therefore threatening that. I wonder if we are more sensitive about it than biological men (who are notoriously sensitive about being seen to do anything that would compromise their fragile, butch identities).
As for me, I identify as a gay male, so I can get away with anything! I love a lot of stereotypical gay male stuff, like opera, musicals, fashion etc etc and I am quite happy with that.
And, Jay, I collect BJDs too! Is it something in the resin, do you think?