This guy has 6600 patrons. Let's assume the average patron pays $5 per month. ***EDIT*** I just looked, he only has a $1 tier and then it goes straight to $10. He more than likely averages over $5, probably closer to 7-8 dollars.
That is, at least, 33k per month. 396k per year. Minimum. 7 dollar average puts him at 46k per month. Which is roughly the median yearly income in most developed countries. Over a year, he'd be making over half a million dollars.
Professional scam artists would be amazed at this. Not even Gumdrop rivals it. This guy is making doctor money from doing nothing.