Ok, but the methods (hustle, grind-culture, high pressure on marks) are here just as questionable as the end goals (Be the biggest Youtuber).
What can you learn from Mr. Beast? Nothing that a lack of conscience and some basic psychology of engagement couldn't teach you.
To reuse your analogy, what if you could communicate information by arranging the corpses of your enemies in a certain pattern, then use international news reports to get the messages across.
What could this teach us about communication? Nothing.