Two things can be true: The state of Super Nintendo World's animated elements is embarrassing and unacceptable, and there isn't a magic bullet they can fire to fix the problem.
My understanding is the issue stems from strained maintenance resources combined with an unexpected and accelerated level of wear and tear in the Orlando humidity. (Yes, you could probably justifiably argue that Universal should have anticipated these issues.) You can recognize the obvious problem and work to scale up the maintenance team to compensate, but that takes time, and there's the broader issue of "are there enough qualified animation maintenance technicians in Orlando between the seven+ theme parks that need their services?"