The overturning of Chevron at this point is practically irrelevant; the Supreme Court had already stopped using it for quite a while. Look at the recent "bump stocks" case. No one, not even the dissent, bothered with any real Chevron deference with it. They went straight to the text of the law and barely paid any attention to what the agency said.
If anything, the bump stocks case was a sign of the problems of Chevron. For about a decade, the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) said that semiautomatic rifles do not count as machineguns under the National Firearms Act. Then after a mass shooting involving one, it suddenly changed its mind and said they
do count as machineguns, even though nothing had actually changed in terms of how semiautomic rifles worked.
So according to Chevron, if someone were arrested for having bump stocks (in a state where they weren't otherwise illegal)
before 2018, the Supreme Court would say that's wrong, the ATF said they aren't machine guns. But
after 2018, if someone was arrested for having the same weapon, the Supreme Court would say that's right, because the ATF said they are machineguns.
Indeed, as I heard someone mention (I think it was on the
"Evil Batman" episode of the Divided Argument podcast, can't remember if it was Epps or Baude though who said it), that brings us to an issue with Chevron: This wasn't some secret thing only the judicial branch knew,
agencies were aware of it also and were taking advantage of it politically.
Chevron had some good ideas behind it but I feel as time has gone by its issues have become more apparent, and it's been all but discarded by the Supreme Court already.