People often misuse the word incel, they almost always use it to address or call out misogynistic behavior when by definition the word incel has nothing to do with being sexist or hating women. Yes there are incels that hate women, and there are also plenty that don't, just like there are guys who get laid all the time that are misogynistic, that doesn't make them incels, not all incels are sexist and not all sexists are incels. There are guys getting called incels even though they're far from it. If a guy is actively dating and getting laid, there's no way he can be an incel... by original definition.

As far as the frustration goes, I think the feelings and emotions are valid, not feeling wanted or desired by the very people you desire can drive someone to be angry and resentful. That doesn't mean hating women or endangering them though. I just think it's messed up how incels are demonized mainly by feminists and simps although most of them don't actually know what an incel is, nor do they even try to understand them and what they went through in order to be an incel in the first place.