Yes, he discusses the Platonic aspects of his theory in a paper, “Ingressing Minds: Causal Patterns Beyond Genetics and Environment in Natural, Synthetic, and Hybrid Embodiments”:

https://osf.io/preprints/psyarxiv/5g2xj_v1

Here is a page that collects material related to the Platonic space: https://thoughtforms.life/symposium-on-the-platonic-space/

I find the Q&As on his personal blog the most accessible way to grasp his views: https://thoughtforms.life/qa-from-the-internet-and-recent-pr...