This supreme court is very much on track to eliminate any authority federal agencies have that aren't explicitly written into law. Effectively destroying federal agencies ability to make rules.
Very dramatic. Really, it's a reaction to Federal Agencies — unelected governmental representatives — unilaterally making their own rules out of the gray areas.
Eliminating Chevron will trade "unelected governmental representatives" who work at Federal Agencies like the FTC with "unelected governmental representatives" who are work for Federal Agencies that are the US Courts. Progress?
This is like saying that the US President is an unelected governmental representative. The population actually votes on a Representative for the Electoral College (EC). The Representatives in the EC then vote for President and Vice President. And yes, the EC Representatives are voted for because they say they will vote for a particular candidate (and as we figured out in 2012, many states have laws penalizing EC Representatives who don't vote how they committed to).
Under current precedents all the State decriminalization of marijuana and other drugs that we've seen are all unconstitutional. It was the liberal justices + Scalia who made it so. Those State laws decriminalizing various drugs are being tolerated by the feds -- for now.
The federalism revolution and its opposite both cut both ways.
On the whole I would prefer that the court resume its federalist revolution, even though some results I wouldn't like.