yes, I know that, but if YOUR home server goes down, your whole profile is doomed and you need to start from scratch and join the room again with another profile, not to mention if all participants where in the same home server the group is gone
while in Delta Chat you can just use several relay nodes and replace them while keeping your current profile part of the group
Klarname: #NichtMeineRegierung (npub1skd…32d6)