A lot depends upon the client and relays that you start off with.
That makes sense. Amethyst and the defaults back from when I signed on. Don't really know what they were.
Amethyst has group-mutes, now, and they've changed up the relays. I started out surfing global on lol, with no group mutes. https://media1.tenor.com/m/sw0YIiS6ggYAAAAC/my-eyes-oh-my.gif