I mostly agree with Onix.

The main point that's important to understand: For lolicon, especially 3D lolicon, there aren't really any other sites where it could be posted. There is pixiv, but there it has to be censored. And there is lolicit, but accessing that takes some effort. Everything else on this site can be posted on a bunch of other sites, and most of it you will find on some of those other sites.

Without this site, lolicon fans would lose the only site where they can get this stuff. Fans of other guro content would just lose a site that conveniently collected content from a bunch of other sites, no original content - even if there are a few original artists on this site, they could easily go to one of a bunch of other sites that would accept that content, while lolicon artists don't have that option.