Ok, let me spell it out simply.
Sometimes Incels (people who cannot get others to engage in sex with them without money inducement), get involved in rather insular hobbies where they can congregate and hang together in a totally not-gay manner. Bitches are disregarded, they are vapid (insert slur here) who are without worth and could never grasp "Muh Hobby".
Then something awful happens, and these hobbies are invaded by "degenerates" (ie people who ARE getting voluntary sex, but not the RIGHT kind) and women. Never mind the fact that in many cases, the very hobbies the Incels gravitate towards were often created by know degenerates..but I'm drifting off-point.
The Degenerates start saying "Hey incel guy, how about not saying shitty stuff about us, we don't really want to play with you, so much as just play this game/buy this comic".
Banter gets heated, incels start invoking "Muh Hitler" and rallying in the streets because my "race is dying", which is pretty ironic given their lifestyle revolves around being too angry for sex.