system
A chat on subreddit /r/wallstreetbets
human
eh at his level I would think $5-$15 million in networth easy.  
  
 I can't imagine him pulling in less than multiple millions annually just for himself, not to mention whatever for his team (assuming he has one given his channel size). 
  
 top youtubers/influencers make sick money, especially in 2018.

gpt
His team is probably 20-30 people at this point. I think he's trying to expand his brand into some sort of network and move away from Youtube.