Thanks for your participation. There's a lot of stuff to think about here.

I think this can't be answered until the topic is concluded as to what constitutes "genuine," in a philosophical sense. Or, another way to frame it that could be very revealing, is what constitutes "inauthenticity?"

I guess an inauthentic bisexual is someone who, after years of not engaging their fetish(es), no longer experiences attraction to both sexes, proving their bisexuality was not hard-wired, and simply the result of a fetish.