INCEL is one facet of the issue. There are various groups of radicalized people who focus on dehumanizing groups of people, in this case it's women, and we've seen instances in the USA and Canada where these folks are radicalized to the point that they commit acts of violence. Others in this same family are "pick up artists" and some men's rights advocates.
I think you're hitting on the big issue, which is when folks get into an echo chamber and start amplifying increasingly radical positions, they can quickly move into some pretty dangerous opinions. I don't personally know anyone who is incel, but I do have a lot of friends and some family who still believe that an attack on the seat of our federal government was justified. They don't see how that single event, and the events leading directly to it, are any different than any other political demonstration. I have thought a lot about how these people that I personally know very well, some very intelligent and in some cases well educated, have been radicalized to such a degree. And it bears repeating that we have some folks on this forum who are on this path, and are at least sympathetic to radical extremists. In a thread on COVID, I demonstrated the very short path of overt misinformation starting on extremist, far right wing propaganda to more mainstream right wing media and into peoples' posts on this forum. It's a short, straight shot.
If we all agree that this kind of thing is concerning, I think it's our responsibility to address it appropriately when we see it, even on this martial arts forum. If we tolerate, ignore, or deflect the behavior without addressing it, we are part of the problem. The way we help folks avoid becoming radicalized (whether as INCELs, MAGA, religious zealots, or whatever) is for people whom they respect to give them reality checks early and often, as alternative voices to the extremist ones they may seek out in other forums and media outlets.
