Banned for CSAM?

Hello,

I've been trying to log into my main account on Lemmy.world (same username) and eventually through enough Googles discovered the account has been banned for CSAM. I've just been posting popular content from Reddit and Danbooru to the Lemmy.nsfw federation. I wasn't aware what CSAM even meant before today or that those sites allowed that. I'm just trying to add (supposedly popular) content to the community, not break rules because some artist made a piece that crossed the line. I can switch to this lemmy.nsfw profile if you wish it of course, but I don't want future posts to be getting the community defederated either. With anime characters the artists always are pulling the whole "Oh yeah they're over 18" card and those communities I'm reposting from clearly buy it. What standards are you looking for to define CSAM? I'll be sure to avoid reposting that content on lemmyNSFW in the future. If petite gals are too much of a risk, users can find them elsewhere. Sorry to have grabbed undue attention.

Edit: I'll just err on the side of caution and ensure future posts favor those on the curvier side of the spectrum unless clearer standards for guessing anime women ages are established. Should any of you have additional advice or want a specific future post removed please let me know. I want this place to replace Reddit. Not become a CP den