The data cited is from here - https://www.keller-advisory.com/creators-uncovered-insights-from-a-nationally-representative-study-of-uscreators
The report states that 3 percent (almost a million) of the 27 million content creators receive more than a million dollars a year. This would suggest more than half of Americans earning more than $1 million a year are content creators.
It also says 3.3 million content creators have over 250,000 followers. This means that every single english speaker in the world follows approximately 600 large scale content creators. (Or half follow 1200 and so on - there's no point it's not absurd)
Definitely valid results, 10/10 methodology