What is the argument here? You want us to use law theory from before the industrial revolution or something?
That limiting the administrative state is far from a monumental changing of the rules. Nobody is challenging the administrative state per se. The major doctrines principle is just being expanded, which limits Chevron, something that only came into being a few decades ago.
The effective reuslt of the non-delegation doctrine is that, when Republicans do not like a policy outcome, Congress is required to employ a time machine to give explicit instructions to an agency decades ahead of time.