A lot of the discussion around incels, men not approaching, self improvement, men missing signals and retreating to video games/Internet porn is missing probably the most important key in that discussion;

Men aren't approaching women because they don't want to make them feel uncomfortable.

This isn't without reason, actual sex criminals don't care about making women uncomfortable, they care about getting off.

The problem is normal people who are just trying to be social and not committing a crime subconsciously compare themselves with sex criminals whenever there's a miscommunication they assumed made a woman feel uncomfortable.

Thanks to overzealous Internet communities it's now become a sort of zeitgiest where woman's discomfort when interacting with the opposite sex is equated with sexual misconduct regardless of the context.

This discomfort made dating apps popular since there's a general idea of mutual interest but the survival of the apps depends on people being single.