She’s not talking about every man in existence, but the specific men she’s encountered on dating sites. Obviously not all men are immature ((by her standards) or she never would have met someone who makes her happy.

The crux of your argument seems to be why can a woman write about what she wants but a man would be abused for writing about what he wants. The answer is he wouldn’t IF it was a considered article about wanting more than a fuck buddy. Even this would be fine if you didn’t whine in an entitled wsy about women who want more than sex (you say you respect women’s choices so this can’t be your issue) As you’ve pointed out, many people of both genders like casual sex so what exactly is your problem?

You say you’re not upset about women rejecting you so why all the bitterness about men being shamed? Maybe the women in your life use sex to shame and manipulate you but to claim all women do the same thing is ridiculous.