This is a stupider result than just overturning it in its entirety, and the only lens to read it through is Roberts desperately not wanting a shitload of Republican induced chaos right before the election.
One tiny Chevron saving grace: "today's decision does not call into question prior cases that relied on the Chevron framework. The holdings of those cases that specific agency actions are lawful--including the Clean Air Act holding of Chevron itself--are still subject to statutory stare decisis"
And under this ruling they’d be fine to do so. How in the world would they treat a precedent based on chevron, itself no longer precedent, as precedent?