Women have been shouting from the rooftops about MRAs and incels for well over a decade now, and everyone just patted us on the head and said how hysterical we were being.
If you click thru to @barefootboomer and check his feed he shared an informative thread by someone who has been researching/studying this. Don't feel bad, am in my early 40s & hadn't heard the term incel until earlier today altho I have encountered many. MRA=male rights activists