Perchance does have IP-based abuse detection/mitigation in place for some aspects of the site, but it's not as easy as you might think, because some IPs are shared by hundreds of people (e.g. some university campuses), and others may even be shared by thousands of people (e.g. browser VPNs).
The proper solution here is to just make the moderation system bullet proof, so it's not possible to generate illegal content in the first place. I've temporarily paused work on text gen upgrade for a few days, and have been working on this today actually.
There's no simple fix, so all the issues won't go away over night, but it will iteratively improve over the next few weeks/months as I make improvements, catch edge cases, etc. Same with trolls on the comments plugin.
Note: If perchance were a big company with lots of revenue then this would be easy. There is no company, no subscription revenue, no plural developers - it's just one person running this whole site. So please keep that in mind when comparing perchance to other websites/companies who might be able to fix issues faster by throwing a few spare devs at it, or spend more money on a smarter AI model for the moderation system, etc. I will fix all this - it'll just take me a bit longer than it would for a company.