Can I get banned for “fail to communicate”

no

heck, you cant get banned for not pinging in the first place. not communicating isn't and will never be bannable.

You don't have to chat or ping. In fact, you could mute all chat and all pings and just play the game with zero communication whatsoever, and still not get banned. Admittedly, you'd be hurting your chances of winning, as teamwork does win games, but you wouldn't get punished for it.

No. I dont know why thats even a report option.

Nope. I mute all every game for a season and a half.

My opening statement once we're all in the rift.

"I mute all every game. Need me? Ping me."

And right after type/mute all.