I don't think Davidad has AI psychosis (his views seem to be quite coherent and aligned with his long-standing views on moral realism). But I think he is quirky and maybe expressing his views in a deliberately provocative way. He implied in his thread on leaving ARIA that it was his equivalent of the Death with Dignity post, which was also on April Fool's, and that thread definitely had some weird stuff (e.g. calling it "Alignment with Awakening").
Davidad also announced the other day that he's leaving ARIA to pursue a research agenda focused on working with AIs on moral philosophy.
https://x.com/davidad/status/2039390998694891816