Devastating that expertise will no longer influence the application of law and policy. The biggest question is who will interpret the application of law? Will it be challenged in court once again until a clear statement is made? Meanwhile, what will be the effects of this “deregulation” until a clear statement is made
The constitution mandates that the courts interpret the law. Thomas and Gorsuch are right in their concurrences, allowing the executive branch to both enforce and interpret law is abhorrent to our constitution's proscribed separation of powers.
The idea of Congress delegating certain powers dates back to 1825:
* https://constitution.findlaw.com/article1/annotation03.html
Further precedents from the 1920s and 1930s (and more recent) are listed in the above link. It's not a new idea that some ambiguities are left to the Executive to figure out.