Literally, the point of Chevron was that we cannot expect legislators to be as knowledgeable as the experts working at specific agencies. So allow the agencies leeway to act within the scope of the grant authorized by Congress. If Congress sees an overstep, then they can rein in that authority. I would love to hear a well-reasoned argument on why this should be disturbed.
Although, I know it will be overturned and well-reasoned won’t be part of the decision.