Looks like there are no plans for AI in their VTT:
Update 2/08: Hasbro's representation has sent us a statement about the usage of AI in future games: “We’re very excited about the partnership with Xplored, but want to clarify that this partnership is centered around future applications within board games and not the Dungeons & Dragons tabletop roleplaying game or its upcoming virtual tabletop.”
Their VTT seems primed for microtranactional garbage though, and Foundry is amazing, so I don't think I'll touch it.
Obsidian.md. It runs on markdown files, so even if you decide you don't like Obsidian, you've still got all the files. It's super easy to sync with SyncThing or probably Google Drive or whatever. It's free, and the are a ton of plugins for it. Peri sure there's a Lemmy community for it around, too.