>What is the actual reason for this?
Jelousy, trying to control competition.
This woman is 25+.

She's trying to shame men into not dating younger (ie. better quality) women.

Nothing else to it. Just women using their natural strength (manipulation) to get something out of it (more simps/more attention/better mates). Of course it doesn't really work.

The entire basis of feminism is maximizing female sexual selection (ie. jungle-like female selection) and getting rid of civilizational sexual controls. That's about it.