Banning Yasuo is like wearing a seatbelt
I'm not worried about MY driving leading me to a car crash. I'm worried about other drivers causing a car crash.
I don't ban Yasuo because I fear fighting him. I fear Yasuo fighting my teammates... and I have a HASAGI! limit of 200 times a day. Any more than one match against Yas exceeds that limit.
so Yasuo shouldn't be a problem...