Are you saying that the chevron deference elimination allows the courts to overrule congress? I don't think that's the case. I think the courts still can only overrule congress on constitutional issues, the same as before the chevron deference was eliminated.
But then so are the bureaucrats. Hence the ass-backwards emissions policy we have now. The different is courts are compelled to hear well-reasoned arguments from experts on both sides and adjudicate based on their analysis, whereas bureaucrats can and do turn a deaf ear to anyone that doesn’t toe the party line.