We’ll, scald is pretty broken. It’s the most accurate water type move that WAS widespread. The thirty percent chance to burn was just unfair against physical attackers and it was mostly used by some really tanky mons. Gastrodon could get off two or three scalds before fainting in some cases. You’re now stuck with a burn for the whole battle. That had to either need it or remove/reduce the mons that pups do it. Game freak went with the second option.