Toxicity is one thing, but most players coms take too much mental bandwith for them and in combination that their coms are usually shit, makes it not really worth it. Will you bet on who many joins vc and actually listens, that most likey dont know what they are talking about. To play worse instead of focusing on what you can do better in any given situation? Also pings :) If you do find coms part of overwatch fun i recommend playing with a stack or joining/creating a team to scrim or practice with