Earlier quoted context omitted.
Republicans originally celebrated Chevron because it took regulations out of the courts' hands.
Did they? I wasn't there. But a reversal of Chevron doesn't necessarily mean that the courts get to do what they like. It may mean that the courts simply get to gut the bureaucratic state and kick the can to Congress -- that what's not forbidden by statute is allowed rather than that the courts act as regulators. There will be lower courts who will want to push their role as regulators, but the SCOTUS seems uninteres…
Even a fully-functional representative body can't write laws that are explicit enough to cover every possibility. And the U.S. Congress is far from functional.