I think that there is a difference between incels and "men going their own way". Some of the seconds are good in my book. The problem with the Incels is that some have literally kill people because their mindset and that they think they are owed sex. After the "they all suck" they don't go their way, they attack. Sometimes not just with words, but also actions.
And sure, thinking everyone sucks is resentful and not good, but people who keep to themselves doesn't hurt anyone.