This looks interesting, everything seems to be published at first glance. This feels like a project that would be years in the making especially since its now competing for user share against matrix and discord.
While there is a company set up, this does feel like a bus factor of one project which can be a point of concern. I don't really care about the LLM usage since the author clearly acknowledges the guardrails. For a project of this magnitude I'd probably (from the perspective of a discord user) want to see communities shift over first (like the bluesky and mastodon migrations) which will probably occur in tech communities first at this point. All in all, I wouldn't say it would be foolish to test run this but it'd have to be done with the expectation that it could be temporary.
Note, try to get out of the habit of calling things "open source" as the term doesn't accurately describe the actual state of the work and ends up being a marketing buzzword whose social currency changes based on who youre speaking with. I like using the word "published" because it then evokes the feeling of scientific research rather than technical jargon (open source relies on an audience knowing what source code is)