The complaint is about forced inefficiencies that Patreon then foists onto its customers. They are balancing their books by upping their fees, not streamlining their business and they can only do this (in the short term) because they have a fairly captive audience.
We are about to see a whole sea of Patreon competitors.
I really hope so! I had been using Patreon as a "poor man's microtransactions" with $1 subscriptions (contingent on actually producing content, if possible) on something like 40 creators. I moved over to SubscribeStar, but they don't have the default $1 option.
A web app could aggregate charges to me, and aggregate payments out to content creators. Obviously. That's what Patreon was doing. Others could do it too. (If the allegations of collusion with payment processing are true, this would explain why this isn't done more.)