"I absolutely agree with you this thread is not the vehicle for a discussion of male entitlement generally."
I don't see why not.
Kathy Lette's assumption that her son is entitled to sex, doesn't just exist because she's a bit stupid. OK, she is a bit stupid, she's demonstrated that very well over the years (I too couldn't believe Girls' Night Out was sold as feminist writing, it was dreadful); but her stupid idea didn't just come from her own stupid head; it comes from a generalised assumption that men are entitled to sex.
That idea is so strong, that I remember a few years ago a local authority suggesting that men with certain disabilities should be taken to prostituted women by their social workers in order to be wanked off, because the nature of their disability meant they couldn't do it themselves and apparently it's something tax- payers should be paying for.
No-one has suggested that disabled women should be provided with handsome young men to perform endless cunninlingus and roger them stupid at the taxpayer's expense.
Male entitlement to sex and female's function to provide that "sex" is absolutely at the root of KL's distasteful ideas. She didn't just pluck the idea out of the air, without having come across it as a mainstream idea in society.