There's a theatricality to some of queer/LGBT+/gay/bi, and increasingly, non-binary/trans/etc presentation, but we should understand that this largely ends by the end of certain high school experiences, almost totally ends by the end of college, and is vanishingly absent by the end of one's twenties. Yes, we have LibsOfTiktok type conservative turfing that makes some select social media posts like some sort of lunatic wave of the most extreme individuals, but otherwise people are just doing normal people things, including about their sexuality and gender identity.
This includes bisexuals. There's bis that totally prefer (you can prefer, or not prefer; there's an individualistic quality to attraction) one sex, that's the other sex, and the market for these dates and partnerships is obviously super easy compared to finding a love of the same sex. They may want children badly, and that's much harder with the same sex. They likely live in a much more heteronormative environment compared to where homosexuals at least tend to try to end up in (safer urban gay communities). So all that's changing here, is more public acknowledgement of who they more FULLY are, and a desire to be understood for even what they're currently not actively pursuing. A bi woman could 'experiment' in college, yet legitimately enjoy those 'experiments', but find a man that they marry and have children with, but they still want others to know, with socially progressive intent, that this relationship is not all she is as a person. She may very well divorce him and end in a relationship with a woman. She may be in some level of openness with experiences with the cooperation of her husband. She may have a more businesslike dealing with her husband but have passions for a woman. She may not do anything at all with women but just want to be more properly understood and not invisible on this matter (especially as female sexuality is historically ignored). So there's more comfort and being open, at least on a damn survey. I've had multiple women in marriages to men come out to me as bi, and I absolutely believe them. There's other bi women who go with whoever, and that still statistically points them towards men, because there's so many straight men. There's other bi women who prefer women, and many of those will actively look for women as a committed partner and try the best they can with that, sometimes succeeding but occasionally being assumed to be a lesbian when they aren't really.
What hasn't changed so much is public awareness of bi men, even if its improving. This is from the more intense homophobia towards men. Gays have pushed through and are trying to continue that, but the journey of bi men feels like its only starting. I don't see this improving a lot for Millennials, but I do see a path for Z and 'Alphas' (bad gen name) in the future.
Through all of this, MOST bisexuals WILL end up in one or more long term relationships with the OTHER sex. Trans/other bis/gays are all too small in number and too publicly localized into specific geographic areas for it to be otherwise. But homophobia and biphobia towards and within bisexuals has to decrease, and along with that, we'll have a lot more honestly out and open bis that won't let anything get in their way to express that with the same sex. Sure this can mean just a rare hookup, but it can also mean their own long term relationships that they may have otherwise allowed/made themselves deny in the past.
Sure, some put on a show. I particularly cannot trust many college-aged women kissing another woman at a party and suddenly she's soooo bi. But we all put on shows. The longer term stats, cultural trends, and human rights fights will indicate a lot more, and so far, I'm rooting for bisexuals - even if sure, I'm not so kind to self-haters, same like with any minority.