WebCord is an “alternative client” for Discord, although it’s just running the Discord webpage in electron. Recently it updated its electron version so it supports sharing audio as well as video.
I tried it out today on mint (x11, pulseaudio) and it works flawlessly.
They maybe you should transition them off of it if you can
Well I do agree that Discord is horrible, you’ve got to understand how hard it is to get friends that don’t care about their privacy to use something else.
So far there’s no good alternatives