It isn't siloed though, not truly - not in the way Teamspeak or Mumble used to be, at least. Discord's global friends list is what will keep people from abandoning it in droves, unfortunately, and until Teamspeak et al sort that out it isn't changing.
EDIT: Maybe I completely forgot how Teamspeak works. It seems like there is a global friends list, but I can't remember that it was a thing back in the day (10+ years ago).
EDIT: Maybe I completely forgot how Teamspeak works. It seems like there is a global friends list, but I can't remember that it was a thing back in the day (10+ years ago).