Part of the reason this is hard to understand is that people who are not creators (and even some who are) think of what Patreon affords as "selling stuff". Which is incorrect.
There are two problems with the selling stuff paradigm: the selling and the stuff.
First and foremost, Patreon does not require you to sell anything. I mean, you can use it for that. Lots of creators do.
I don't.
I use Patreon for patronage instead. Kind of like it says on the tin.
So this is the next item on the list.