What was the purpose of "fixing" Kylo's escape?

Things like this are done so others who take the time to get the character to where it needs get screwed in not being able to also utilize the character for said purpose. The wrong characters get nerfed, that blaze guy and his side kick are still overpowered vastly. Same goes with the Rogue One Rebel characters. When two characters can defeat teams of 5 other characters consistently and one right after the other then you know something is wrong.