When a champion's only way of being shut down perminently is to win the game before they scale to OP

This is 100% bad champion design. Every single game has a potential of ending quickly. But that likely hood is not great. Champions who have strong or at least average early games who scale ludicrously well into the late, even if they were completely shit on in the laning phase (looking at you and ) have an unfair advantage over the rest of the champions. 100% guaranteed that any game can and will eventually reach the late game if a quick and early victory can be avoided. If you are not dominating by 15-20 minutes, your looking at a game time of around 35-40+ minutes, well past the point where early game champions have started to fall off and late game champs are turning on. But when a champion has a strong early (lane bullies especially do) and they scale well into the late game with only slight fall off here and there, we start to see issues.

League does not stop mid game where once you reach a certain level you cant progress until X time has been reached. A little oddly worded, but basically Since time goes on and players do not regress champion builds and scaling, every minute passed is 1 minute gained in strength by the late game scaling champions and 1 minute lossed in strength by the early game champs.

Another way of looking at this is that it is up to the early game champions to win the game before X time is reached. All the late game scaling champs have to do is hold out, which is by far easier since time is on your side.

My point being that these late game scaling champions, who also have strong laning phases (early game), need to have something implemented to lessen one of those 2, either the early or late game. When a champion is strong 100% throughout the game, by design, and not by player skill, they are fundamentally unfair for League of Legends. This being because League of Legends has put so much into these game time power areas (early, mid and late) where almost all of the champions have their areas of strength and weakness. It is the exceptions which are the issue and cause the most problems.