If disabling chat does not, in any way, prevent toxicity, and CC is just as toxic with chat disabled, then why even bother disabling chat?
Enable it, so that we can communicate and coordinate, the quick chat functions and the markers cannot replace chat because there is always a possibility of miscommunication and misunderstanding.
If chat is disabled to prevent toxicity, then make it so it is not possible to get punished for toxicity in CC.