In games like Destiny or CS:GO for example, you should not even be allowed to start the activity without a working microphone. I dont care if you are antisocial, if that’s the case, those activaties aren’t for you and you shouldn’t bring down your entire team because of that.
As an clarification, I’m more worried about Raids than PVP
Funny enough most have a mic they just don’t talk. Personally if it matters that much you’re joining the wrong matches. I’ve played loads of games where nobody spoke and we won most of the time. A good team will do fine with or without a mic