I don’t think anyone is saying he couldn’t help it because he has brain parts that we all have that handle more basic or emotional urges and instincts. However that is one reason we acknowledge that teenagers and young adults have less good judgement until the frontal cortex catches up with the limbic system (one of the arguments against minors transitioning medicallly). It is a thing, and there is an evolutionary history to it.
I’m just tangentially wandering off really but in relation to NG, things we know suggest there have been plenty of evidence of planning and arranging by him, as well as developing an actively pro-feminism cover persona, and we’re not talking about some who’s unable to control himself.