The combination with a different decision to remove the statute of limitations for new companies on old regulations does indeed make this a bit of a "doom" scenario. The courts are already backing up with these lawsuits, and it's going to only get worse.

It won't stop agencies from creating new regulations, but it's going to make enforcement depend entirely on the court that the lawsuits are filed in, and how backed up their caseload is.

The US isn't the same as it was 40 years ago.