Every encounter doesn't need to end in PVP

Proximity voice chat will just open up even more avenues for griefing, and it's not that much of a desired feature to begin with. You don't even need to look far to see the negative sentiment; every time it's been brought up in this forum in the past six months you immediately see that a lot of people want to turn it off, and the counterexamples brought up in this thread already outweigh the positives.

If you want voice comms with your team, the out of game voice call ecosystem is probably the healthiest it's been. Or learn to type real quick between actions.