people adding each other on discord is born out of the desire to talk when not in game and ultimate boils down to a desire to be together
it's not inherently a bad thing

I do think people sit around in voice too much and don't log into vrchat enough, but I don't think that's behavior you can control.
also the stagnancy, especially during NA hours, is due to a number of things and can't be laid at the feet of discord alone