A base assumption that every law comes with an implied "lets the Executive define, without any restriction, what this agency should do" is certainly not something I'd want…
You badly misunderstand what Chevron deference was about and how it worked. This is not at all how it worked.
The text you've quoted contains GP's interpretation of how these laws in general are written and my response to that. It is not related to my understanding of the Chevron deference. Putting it in separate paragraph was supposed to make that clear so sorry if it was left ambiguous. My understanding of the Chevron defence largely stems from and concurs with the notes in the "Opinion of the Court" section of https://www.supremecourt.gov/opinions/23pdf/22-451_7m58.pdf
If you meant something else then all the same you've left no other clues to interpret what your assertion is disagreeing with or why so.
You badly misunderstand what Chevron deference was about and how it worked. This is not at all how it worked.