Congress can actually legislate the right of agencies to interpret the gaps in the laws back into effect - by passing a law that explicitly gives agencies this power. Just like congress can legislate abortion laws rather than leaving it to judicial precedence. Fundamentally there’s nothing wrong with the position of supreme court to push the responsibility of lawmaking back on congress.
I liked this section of Justice Gorsuch's concurrence: > How bad is the problem? Take just one example. Brand X concerned a law regulating broadband internet services. There, the Court upheld an agency rule adopted by the administration of President George W. Bush because it was premised on a “reasonable” interpretation of the statute. Later, President Barack Obama’s administration rescinded the rule and replaced it…
If his complaint is that there's an executive discretion in executing the law or the expectation should be that congressional force only goes as far as its ability to write micromanagement into statute then it's hard to restrain from making "do you even constitution bro" or "who are you and why are you wearing that robe" remarks.
(Of course, in representative government, not only elections but agency and judicial appointments have consequences, so while it it may be inconsistent for justices to exercise that privilege for themselves while arguing away the right of another branch to do the same, it is not that big of a surprise, and it is entirely consistent with a philosophy based in elitist privilege for some that is likely behind much of today's ruling among others.)