Yep, I talked a bit about this earlier in this
post. While loli, or at least simulated child pornography, are legal in the United States by the virtues of a U.S. Supreme Court ruling in
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(2002) which to my knowledge has not yet been overturned since then, it may not be legal in another country. You may also be held criminally liable for being in possession of such content even if you don't share them at all (e.g. if such content are discovered on your PC while a search warrant are executed in connection to unrelated case). So do check your country's laws first before you disseminate any loli content publicly or download them yourself.
Personally, I would be against any prepubescent depiction (that idea alone make me sick to my stomach
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) but to each their own. However, I think age of 16-17 are fair game, particularly if it involves a teen couple. In the real world, teens always experiment with sexuality before age of 18 and it would be silly to think that the human society worked differently otherwise in LifePlay. Such experimentation are also known to occur earlier at ages like 15 and perhaps even earlier, but that might be a bit shaky territory to say at least.
However, obviously, this kind of depiction, even if restricted to teen couples only, is not permitted by Patreon which can be pinned down to they either are A) too prudish or B) covering their ass legally in countries that are more stricter about depiction of teenage sexuality since not all of the Patrons and Creators are from the United States. I think B is most likely; even if all they do is to act as a middleman in facilitating the payment and providing the interface for Creator to share and communicate with their Patrons, they will still be legally liable for indirectly enabling the illegal activities. Doesn't matter how you slice it, they'd still be held responsible for it. Such is the sovereignty.