

My humble experience so far: https://kcross.engineering/blogs/matrixandmautrix/
Biggest thing so far is “go slow on federation”. Large federated servers are where you get into trouble with resource requirements and needing to spin up workers, etc. Small, private servers are relatively easy.
Per the email text and Plex’s policy, they are correct - only Server Owners need the Pass.
That said I moved to Jellyfin months ago when they announced it.