I tried Manyverse for a bit. The fact that it practically (even if not absolutely) requires servers erodes any advantage it may have over the various well-developed decentralized federated server-client platforms (using eg activitypub).
Getting away from centralized megacorporate platforms is important, so we've launched this Mastodon server targeted at voluntarists, freedom-loving anarchists, libertarians, listeners of Free Talk Live and LRN.FM and the members of the Shire Society.