alt Hacker NewsThis seems like a distinction without a difference. If you used a paid service offering Mumble servers that used some custom software that allowed them to offer multiple ... "servers" on different ports/IP addresses from a single daemon, would you really care?
Focusing on the fact that it's not really a "server" because they aren't running as separate processes seems like utterly silly pedantry, and we probably don't even know if that's actually true regarding Discord or not.
The distinction matters. The cost (to my users) of switching from one Mumble server to another is the same, regardless of who hosts the server. The cost of switching from one "Discord server" to another is much lower than the cost of switching between Discord and any Discord clone, keeping people on Discord.