It would be, yes, but if you have an operation that has 4,000+ bank accounts and/or credit cards that can't be traced to you it'd be easier to have them directly deposit $100 a month into your main account. It'd be no less anonymous than Patreon's system, even easier to disguise as a legitimate business with 4,000+ "regular customers", and you'd keep the 8% cut that Patreon takes as processing fees.
That's the ultimate death of the "Patreon as money laundering" theory. No criminal with half a brain would use a system that records and identifies all transactions, keeps a big slice of the cash, and would run to the feds at the slightest sign of anything wrong.