I'm at a loss to figure out what is upsetting to anybody about demisexuals, let alone why women would be upset about demisexual men.
Wait, I can see why LGBTQIA+ folks might be testy about adding another group to the mix, especially when the first six letters go through life with targets on their back. But otherwise? ¯\_(ツ)_/¯
For me, reading articles like yours, Matt, help me figure out parts of my life. Like my first wife (who's gay) having an affair with a woman shortly after we got married, because sex was a big deal to her, whereas for me, love is more important. Like why statements like, "The relationship was awful, but the sex was great, so I stayed with it" makes sense to most people but leaves me thinking the speaker is a moron. Like why I was relieved when my second (and final) wife's libido crashed during menopause and I could stop pretending to like sex. (I mean, I like sex. Kinda. I like cake, too, but I don't want to whip up one from scratch every time I feel like a snack, and sex when you're over 50 starts involving way too many ingredients — for both parties.) (Also, nobody ever complains about having to sleep on the cuddle spot, or "Damn, we did some heavy duty snuggling last night, better change the sheets!")
Anyway, my point (I thought I had one when I started) is that I'm going to keep reading your articles, Matt. (I should probably have started with that. Sorry.)