You're 100% on the money here dude. If you truly want to blow up on YouTube, Instagram, e.t.c, it's all about that 13-15 year old demographic. I attended some YouTube conferences in London and 90% of the attendees were screaming 13 year old fans. They don't only scream and fanatically watch content, they buy merch as well (with their little pocket money and parents' credit cards). This is how Logan Paul apparently moves millions of dollars a year in merch, selling shirts and caps to 13 year olds.