My understanding is that Patreon does not use Google's payment system and isn't subject to a cut of the revenue. This is why the article says "Your prices on the web and the Android app will remain completely unaffected".
At least until 2025 when Google implements the exact same policy change. Every questionable hardware choice Apple does is something Android vendors or Google Play copies within a year.
Remember when Samsung made fun of Apple for removing the headphone jack?
unlike Apple who has managed to dodge scrutiny, Google is being reemed hard by the US courts over multiple antitrust issues. It may happen eventually, but I think the courts doing their jobs will stall such pivots. The last thing they want to do is make their store sound more like a monopoly.
