I'm no fan of banning such things, but an outright ban is much clearer and more comprehensible than Patreon's very murky and subjective (to the point where it's almost impossible that they're not selectively applied, if only by accident) rules.

No? Last time I understood from my artist friends who do kinky NSFW art (as do I), they use SubscribeStar's NSFW version, right over here if you missed it - (https://subscribestar.adult/)

They have two URL's, one for adult content and one for SFW content. You're looking at the SFW rules