It's offensive to this bisexual, too; first, because I'm convinced that there's no such thing as "sexual fluidity", and second, because it erases us just as much as it does you. It's a way of denying that you are exclusively same-sex-attracted... and it's also a way of denying that we are both same-sex AND opposite-sex-attracted, as opposed to "fluid". Really, what's happening is the erasure of sexual orientation itself. Be it homosexuality, bisexuality, or, for that matter, heterosexuality. Because this fundamental reality of human existence doesn't fit the woke narrative.

And while that's a threat to EVERYBODY (straight people included), it's a particular threat to homosexuals and bisexuals, who have had to fight to have our sexual orientations acknowledged and accepted. In fact, bi people face a specific form of this, where bisexuality is widely regarded as not even being a sexual orientation at all, i.e., non-existent-- which leaves us singularly vulnerable to the "you're just 'sexually fluid'!!!" lie. And wokesters trying to use us as proof of it (much like trans-cultists use intersex people when preaching "sex is a spectrum!!!").