Making money on YouTube is highly over rated. A few in the top 10 do make 500K, but a typical big channel with 1-3 million subscribers might make $150K but they will need to pay staff and have lots of good contacts to find interesting stuff to film. At the end of the day after expenses that $150 will probably be $50K in your pocket. It's a Rat race that sucks the life out of people very quickly.
Highly overrated? There's a British woman on YouTube who made north of $20 million dollars per year a couple years ago making videos of herself unboxing Disney toys. Think about that for a second.
And here's a list of the top 10 in 2016....all north of $5 million dollars per year.
MEET THE YOUTUBE MILLIONAIRES: These are the highest-paid YouTube stars of 2016
The fact is you CAN make money on YouTube...and some people LOVE to criticize the people who do. But the fact is, for every person making a living on YouTube, there's 10,000 people who make nothing. Why? Because it's not easy. It's tons of work filming every single day, editing, and having a creative eye.
You can't take away from what these guys like Casey accomplish. They captivate and audience of millions of people daily and spend nearly all of their free time creating content. In my opinion it's an art form just like any other.