honestly, i rather they not...
you can communicate just fine without it and it'll just make it harder for toxic ppl to get punished.
futhermore if you mute someone for screaming at you and they then don't ping because they think you can still hear them, then it'll just leave to more problems in terms of "refuseing to communicate with team", such as: is it okay to mute voice chat befor the game begins? and if so do the other players still need to ping / type what they are doing (makeing the whole voice chat system pretty much useless because you can never know who can hear you)?.
i don't find voice chat a good addiction to the game, lol is a game where you need to stay focused and where there are certian sound clues that you need to pay attention to (rift, baron, abilitys, pings, ect) which are easy to miss if ppl are talking over them.