The way Steam works and itch.io used to work for me, is that all individual payments by customers are collected by the platform and paid out in bulk. So instead of a merchant receiving individual payments (detailing what exactly was bought and thus bannable), you get a more anonymous payout containing multiple payments at a certain interval or on request.
As Maravedis already mentioned, Knightly Passions switched to direct payments and I wonder how long that will last until their merchant account gets banned at Paypal. Some other developers also tweeted about it:
https://twitter.com/Deafpervs/status/1650155139041472512
https://twitter.com/Houtamelo/status/1650232406929035267