Regarding the thing with paypal not allowing payments for NSFW content: I think it's just a matter of luck, whether they decide to check out what you are doing or not.
I've had a paypal account for 5 years now, until they decided to check out what I do last week or so. I'm not getting payed for my stuff, just accepting donations, but the connection was enough to get my account closed down.
That being said, I've made a Patreon page myself because of this as well. Nothing too fancy, and since I'm using it more as an alternative to donations (rather than making a business out of it), I haven't included any milestones or stretchgoals. Maybe I'll change that in the future, but for now I'll just continue making my games as usual.
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