Clearly, "plausible deniability" is the key element here.
Here is my own personal opinion:
Patreon is caught between a rock and a hard place. They certainly like the revenue that adult authors bring in for them, but, at the same time, they have to please their payment processors. To do the latter, they have to have Terms of Service that satisfy the processors, and be seen to be enforcing them. Thus, if there is a situation in which they
can't look the other way, they have to swing the hammer. Two obvious situations would seem to fall into that category:
- The game, as distributed on Patreon, contains content that violates the ToS.
- Someone, in reporting the work to them, can point to something on the Internet (example, a post here) when it is undeniable that the author is trying to get around the Patreon rules.
Not saying those are the only ones, but they would certainly qualify.
As to the whole "patches" thing, there are at least two categories of those, as well:
- The first is a real "fan-made mod" (or, apparently "fan-made"). In this situation, content that doesn't appear in the original game is added to the game. An example - "back when," I worked with another member here to create a "shopping mod" for Big Brother. We added a significant number of images, text and logic to the original game. (For the sake of argument, ignore the fact that the game as distributed violated the ToS.) Now, if something like that is produced which fundamentally alters the nature of the game, and if there's no path to show that that mod was written by the author of the game, there's no reasonable way that Patreon could hold the author of the game responsible for it. Just like, if you open up and make major mods to an appliance, and then electrocute yourself doing it, you can't reasonably sue the manufacturer.
- The second is, by far, the more common situation in my experience. All the "taboo content" is in the game, as distributed through Patreon, it's just "turned off." The patch then consists of some tiny thing (an itty-bitty file, a key sequence, naming a character correctly) that "flips the switch" and results in the game now displaying content that couldn't be shown directly.
A simple examination of any patch will tell you which of the two cases you're dealing with. If, for example, you're looking at a patch file that's a couple of hundred bytes, you aren't dealing with a situation in which a "fan" has gone in and made wholesale changes that the author didn't have anything to do with. Instead, the author "built all of that in," and just distributed the key via some other means that (hopefully) couldn't be traced back to them.
I have yet to hear of a case in which Patreon swung their hammer in which the second approach was taken
in which the patch couldn't be directly traced back to the author. Personally, and this is just me bandying around my own opinion, this is ample evidence that Patreon is doing the minimum possible to satisfy their payment processors, and that they are not The Evil Empire Bent On Eradicating All Taboo Content From The World. I find it completely unbelievable that someone, somewhere hasn't pointed out some game hosted on Patreon, and the corresponding patch on LewdPatcher. We know that forum posts here have been reported. Do you think it likely that, with all the OP's here that provide LewdPatcher links, not a single solitary one of them has ever been reported to Patreon? I consider that about as likely as me winning the next PowerBall. Neither, I suspect, are the Patreon staff complete idiots in terms of what it takes to actually insert new content into a "pure" game. And yet, such games are still hosted on Patreon, and haven't been forced to "mend their ways."
Thus, it's my opinion, and it's only my opinion, as long as it can't be
proven to their satisfaction that the author of the game is distributing the patch, Patreon is going to pretend that it's of the first variety, that the game, without the patch, doesn't actually contain any Material That PayPal Would Object To, and that any Evilness in the patched version of the game is Solely The Responsibility Of Some Random Person Out There, not the work of the Patreon page author, who is a completely pure-hearted individual who would never dream of doing such a thing. That way, you get to use their service, they get to make their commissions off you, and they can say to PayPal, "hey, you can't hold him responsible if others alter the game."
As I said, that's just my opinion, based on what I've seen to date.
That being said, if you're producing a game, and you can figure out a way to do the first type of patch rather than the second (and there
are ways) now you have
real plausible deniability, since even someone who decompiles your game wouldn't be able to find a single "Mom" or "Sister" inside it...