"He makes profits from his followers." And here is the issue - he makes money - a profit - from those that follow him. That is an ethical issue for me, although he obviously has every right as an individual to make money from people who follow him. The church does it, why not him.
But like I said earlier, I like his article about liberty; I just choose to ignore the constant silver silliness.
"When the people fear their government, there is tyranny; when the government fears the people, there is liberty."