The internet is very moderated, on the contrary, in terms of UGC.
Traditional, non-social, websites have single or known-group authors. When one of them is defaced or modified we call it "hacking" not "unmoderated content." We assume NASA's site has NASA-posted content. We assume Apple's site has Apple-posted content.
Sites with different standards for what they'd publish have been around for decades (for gore, for porn, etc) but many of these still exist in a traditional curated-by-someone fashion, or are more open to UGC but still have some level of moderation.
Traditional, non-social, websites have single or known-group authors. When one of them is defaced or modified we call it "hacking" not "unmoderated content." We assume NASA's site has NASA-posted content. We assume Apple's site has Apple-posted content.
Sites with different standards for what they'd publish have been around for decades (for gore, for porn, etc) but many of these still exist in a traditional curated-by-someone fashion, or are more open to UGC but still have some level of moderation.