From watching a couple of interviews, things I've picked up - when his youtube videos were grossing $20-30k a month he started hiring people and said he hires about 1 person per month since then. He has a teams of accountants, editors, producers, etc. He decided early on to have videos translated but would hire premier voice actors in countries, like someone that voice acted Batman to do his voice. He has an obsessed culture of making the best videos. He built a huge studio and lives there.
I see many similarities to what I've read about startup founders and a growth mindset. If anything, there are some huge marketing lessons to be learned from how he runs his business. I would love to see an experienced interviewer with knowledge of the business world/startups interview him.