Maybe. But still, that's not evidence that the agency is unchecked so much as a complaint that it takes too much effort in some cases to check it.
And more importantly, this was not exactly a case where the agency was running amok in blatant violation of the law. It was a genuinely controversial legal proposition whether personal property was covered by the Takings Clause of the 5th Amendment until this case was decided. Most legal checks on agency action do not require enunciation of new principles of Constitutional law by the Supreme Court, so this is not a great example.
And more importantly, this was not exactly a case where the agency was running amok in blatant violation of the law. It was a genuinely controversial legal proposition whether personal property was covered by the Takings Clause of the 5th Amendment until this case was decided. Most legal checks on agency action do not require enunciation of new principles of Constitutional law by the Supreme Court, so this is not a great example.