I feel like it would definitely be weird.
But Patreon does have a web version but I am not sure how many people prefer web sites in Apple ecosystem especially on Ios so I do find the whole thing to be a bit weird because this ~30% cut essentially seems to rip off of creators in some sense.
It rips off everyone.
Epic Games went to federal court over this with Apple like 40 fuckin times - a related fun read for you.
Patreon is a very niche app in the grand scheme of things. There's the saying that only 1% of web visitors ever stop by and actually contribute, and I'd expect that number to drop to 0.001% when it comes to contributing monetarily through a tool like Patreon. This is an absolutely tiny minority.
Hell I'd argue more people are upset about the lack of an OnlyFans app than Patreon. OF has way more brand-recognition (outside of tech) than Patreon.