The issue Tez brings up is very complex. Incel and other similar groups are seeking power that they feel they lost or never had... they're predators, and part of their reward is causing discomfort -- kind of like a cat toying with a mouse. All the actions taken to stop them once noticed are feeding that; they're forcing their victim to notice them, and to react. How do you stop them when the very actions taken to stop them reward them? Consciously ignoring them is one option; in other words, know that they are there, but don't let their presence change your behavior or reactions. But... that also might goad more extreme actions.