I agree with Gorsuch's overall point, but he's also writing it knowing full well that today's Congress is not equipped to do all that rulemaking, and not equipped to agree on and pass the huge volume of legislation that would be necessary to duplicate all that rulemaking within the legislative branch.

And he's ok with this, because his political ideology is such that fewer regulations and less rulemaking is a good thing.

Ultimately Congress cannot take on all of the executive branch's current rulemaking authority without some huge changes to how the body works. Those changes will not happen, because conservatives don't want these rules.