<human>: Can you succinctly summarize the text in 1-3 sentences?

So as it goes, all of these kids in his age group like five nights at freddy's my bro has started drawing his favorite rotting animatronics and it was alright at first. Now it has gotten to the point where when he comes home from school, the first thing he does is hop on the ps4, get on youtube, and watch 5 night's at freddies youtube culture stuff. He'll watch the same videos over and over again. 

I wouldn't be concerned if he wasn't doing it every day and watching the creepy fan material that fans of this series make. And I'm not talking about traditional spooky creepy. I'm talking about the kind of youtube fan stuff that furries and grown autists make. I don't want him getting into that culture. 

I really want him to stay away from furry culture as much as possible, and I'm afraid of my brother getting to engrossed in this stuff. Other kids do it too but his obsession has been going on for months. I want to be laissez faire about this, let him fall into different interests, but I feel like even letting him on youtube at such an early age is a mistake. What do you guys think?
<bot>: brother is obsessed with five nights at freddys and is exposed to the dark parts of the fandom, like the creepy furry side. Should I just be laissez faire or start regulating this shit?