If none of your teammates intend to pick Jhin, dont ban him for crying out loud
For champions like jhin, who take a lot of getting used to when being played within that first week of release, means he's more likely than not going to feed when played. If no one on your team said they're going to pick him, then DONT BAN HIM. It's a waste of a ban.
It's like we've forgotten what pick intent was for. With how little chat there is now, if you really must, just ASK if anyone is planning on playing jhin, and reiterate that he's an unsafe pick right now and you don't wanna ban him