A bit of a crossover from the Trials and Errors section here.
One of the miscarriages of justice that comes up from time to time is the tragic case of Stefan Kiszko, wrongly accused of the murder of Lesley Molseed. Stefan was not mentally retarded. He had done well at school, was considered to be fairly bright, and had a good job as an accounts clerk or something like that. He drove his own car. But there was something strange about him. He lived with his mother and didn't socialise with lads of his own age (23). He didn't have a girlfriend. His behaviour patterns were a bit odd. For example he had a habit of writing down the registration numbers of cars whose drivers (he believed) had "cut him up", although there's nothing recorded about altercations or anything resembling road rage. His hobbies were juvenile.
This all makes sense when we understand that Stefan had a form of hypogonadism. (I think it might have been Klinefelter's, but don't quote me on that.) He had never gone through puberty. He was intellectually functioning as an adult, but emotionally he had not matured. He couldn't relate to his peers and he wasn't interested in girls.
The tragedy was that he had only just been diagnosed when he was falsely accused of the murder (loner, a bit weird, no girlfriend, the sort of person who is suspected). He had started treatment to induce puberty by testosterone injections, and was slightly overwhelmed by these new sensations he hadn't known existed. He had just found out how to masturbate. The cops used this to claim that the couple of testosterone injections he'd had had made him go banjax and murder Lesley. He is one of the sad cases (like Brendan Dassey) who was induced by the cops to make a false confession "so he could go home to his mother". His childlike naivety when he did this landed him in prison for 16 years.
Anyway, he's an interesting example of the puberty-blocked adult, and obviously there are more such people around, although fewer than at one time thanks to diagnostics and HRT. Bright enough to hold down a good job, perfectly able to function at most levels, but "a bit odd" and not relating well to people his own age who have been through puberty.
Puberty-blocked adults are at a disadvantage. They may learn to function in society, they may learn not to appear strange, and if they're having to learn to LARP the opposite sex at the same time then the mental effects of having been denied puberty may not really show. But it's not a good place to be and nobody should be encouraging any inexperienced and obsessed children down that path.