I also saw that yesterday, the spicy part of the post was not the thing about the sis but the part that points to the ToS from patreon.
Yes, Patreon is likely to use evidence like F95 or dicord. I, for myself have reported some creators on patreon for stuff that was here published - pretty sick shit, with kids(!) who clearly weren't even close to the age that could be called pupertary.
The depicted characterswere officially all 18+ (talking about refuse to see the the obvious...) but there was a "build in" possibility to play the game "as intended". The patreon was removed shortly after that and here too.
If you report someone on patreon you have to click through a couple of questions and put afterwards a evidence in:
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From this point of view I can fully understand that a dev, with his income depends on patreon, is extremely carefull about confirming things that can ruin your life.