Then those aren't people Jimmy wants to hire for his company. There are hundreds of millions of teenagers on this planet that want to stake everything they own to make a YouTube channel and reap the rewards - ownership of their work, being their own boss, potentially lucrative amounts of money, microcelebrity if not greater levels of fame, etc. Some will do it, and some won't. Jimmy is very clearly talking to those people.
I know because I was one of them, making my first few hundred dollars ever from adsense at the age of 14 (till I was demonetized a year later and my channel got taken down for copyright, but hey, you learn). I've since grown a bit a taken that energy and it's helped guide me as I learn to make my own startup right now - it's the same adrenaline rush and pursuit of the American dream.
Just wanted to share some fond memories.