I wouldn’t call Patreon a market maker - it’s closer to PayPal than being a content site. You don’t find creators on Patreon and interact with them there, you find them elsewhere and have them point you to Patreon for one-time or subscription payments.

The issue is not in how the fee is calculated, it is jusy that both Patreon and Apple have far too high fees. Having the EU shake this up at least the Apple side is great.