These movements spread in a way that makes me think is artificial.
I seen one in ukraine, and one guy in an incel forum is promoting it.
As per usual, we need a cultural response, not to keep alive these people who want to die, the fuck I care about them. Simply to respond to their philosophy and deselect them, isolate them and eventually physically separate them from the rest of us.
In other words we just have to study them, acknowledge their mental issues if they have them, jail them if they cause problems to others. And guarantee thy dont infect sane people.