It's an interesting assumption - and you may or may not be correct. I'm not sure I subscribe to a capsule view of sexuality in which people are one thing or the other and have appropriate labels, I'm more of a sexuality-smudge kinda bird - I think people fall in love with people and generally make the genitals fit. So perhaps sexuality matters for sexual attraction and hook-ups, I think it's of lesser importance for other things including partnership.

I don't think people should be judged for where they put their genitals or what they do with their genitals as long as its somewhere consensual and legal. Sexuality as a moral choice has never concerned me - or as someone in my social circle once said 'don't yuck anyone else's yum'

For that reason I only really consider sexuality identity politics when it is played politically. Same as race. When it is leveraged for social power either for or against someone, it becomes a matter I think is identity driven. I don't think it's that important - and I understand why that might be offensive to some, particularly those who lived through the latter half of the 20th Century, but hey ho.... tis what I think and I'm all about the honesty. :o)