The damage really has gotten too power creeped
It's crazy that crit ADCs still reach the point where they kill enemies in 1 second or less just by right clicking on them, but since that takes them too long to reach they're not viable.
Sure they will get buffed but the original problem people have had for the past few years remains. It's just not acceptable to get killed that fast by a ranged autoattacker.
They can't be put into an acceptable state until damage goes down in general because they can only compete when they're doing unacceptable levels of damage.