I don't work for Tiptap, but I'm curious as to what your expectations are here.

They're providing tools for integrating Tiptap with AI, including ones for reviewing suggested changes that come from LLMs. I don't really see something that Tiptap should be accepting liability for. As the developer working with Tiptap, I'd argue it's your responsibility to make sure (a) the prompts are giving generally good and useful output, and (b) that you incorporate any necessary UI to put a human in the loop of accepting the AI output. On the latter point, their AI Changes extension is one such example, but there are any number of ways of achieving this.