In cults or high-control groups, a thought-stopping cliche is an easy answer that someone can just throw out when faced with a difficult question about their group and it's worldview. I think that "male entitlement" serves the same purpose, because I frequently see it used to deflect from legitimate frustration men have with the way dating works.

We live in a culture today which rewards understanding and empathy, and in most areas of life, if someone expresses frustration with something which is outside of their control, such as being born into poverty, having a chronic illness, having experienced abuse, etc., it's considered low class to criticise them or tell them to just suck it up, and high class to listen to their problems and empathize with them. This is not extended to men struggling with dating for things outside of their control (being short, autistic, ugly, etc.) but people still want to be seen as empathetic and understanding, so they've imagined that these men are "entitled" and that all of their problems are actually inside of their control.

If someone with a peanut allergy expressed frustration with how hard it is to find a restaurant to eat at that doesn't fry their food in peanut oil, people would think you're a legitimate psychopath if you tell them that they're just entitled and that they need to just get over it so they can enjoy an nice dinner at a restaurant. However, if a man who's unattractive expresses frustration that is so hard to find a women these days, it's totally normal to say that he's entitled and that he just needs to get over it since women can "smell the misogyny" and then he can enjoy a relationship.

This is not to say that there aren't some men who are legitimately just entitled babies, I've met them before, but that's the power of a thought-stopping cliche, it's typically not totally wrong. If your cult leader is a smart guy, it very well may sometimes be true that "leader knows best" when his choices are criticised, but that doesn't stop it from being something designed to keep people from thinking for themselves.