A lot of women think their mere presence and occasional sex is the prize and should be their only contribution in a relationship. I agree that this is the female version of an incel mindset — they are mentally trapped in ideas of a relationship that might’ve been true when they (and the men they were dating) were 17, but is not the case in adulthood. The vast majority of men want more than (in the case of these women, usually bad) sex.
So, yes, women can be incels of sorts — it just doesn’t look like male inceldom. It is equally vile and just as common if not more so, though.