He says "I would like to reiterate that as a professional activist I get to spend my wages as I please." (from point 5)
Putting on my accountant hat I wish to point out this is not true, at least not in the United States. If his patrons are donating money and claiming a charitable deduction he has some hoops to jump through. (It is my understanding from reading up on IRS standards that if one is donating to a foreign entity, that entity must act as if it was in the US). This means he must report to a board of directors that makes decisions about spending and his salary. His financial statements must be available for review and produced under the direction of a licensed auditor. And he must have separate accounts for personal and company funds.
I have seen no evidence that any of this is happening.