Why cant we mute this yet?

For 20 minutes straight, every cooldown of their ping timer. "Yasuo signals enemies are missing" on either your dead body or his or anything really.

Either add a report category for ping abuse, or let players choose between text mute and/or ping mute on a per player basis. Just like text chat can be both helpful to teamwork or abused, so can pings.

There is no reason I shouldn't be able to completely remove communication with this yasuo after he figured out the team all muted him.

Additionally, there could be further ping restrictions in the game. Such as this: every time you hit the max allowable pings, the timer before you can ping again grows quickly until it basically mutes you (current timer -> 1 min -> 5 min -> 15 min)