Master Yi theme is speed and agility meanwhile hes one of the least mobile champions in the game..

Almost every other champion in the game has something that hard counters Yi, either dash, run, stun, silience, knockback, invisibility, etc. but Yi has like nothing that counter.. anything?
Hes the only champion in the game wtihout any sort of a cc.
Depending on his build he either has not enough damage to kill before ult ends or not enough survivability to deal ANY damage.
Wihout ult he feels like an old man on a wheelchair..
Just how hes supposted to compete against any modern champion/rework?
in that order