Who determines that? Trump and Elon? The courts decide whether something is unauthorized by the Constitution, not Trump via EO. That's not how our system of government works. We have checks and balances, and courts. A judiciary and legislature, that also has authority to determine such issues, not just one sitting president with his pen. That's rule by fiat, being under the heel of the whims of a king. We have a system in place and Trump and friends, are now trampling on our Constitution and laws.
They can't just go around firing federal employees or punishing them because they were involved in an investigation that Trump doesn't like. You can't lose your job with the federal government just because you're a Republican and Biden is in the White House. Our system of government doesn't work that way. As a Republican conservative, you're protected, even if the president is a socialist, leftist like me (like Bernie Sanders for example). I can't go around firing people, throughout the federal government, including Contumacious, because I don't like his politics, or he was involved as an FBI agent in an investigation I consider unethical. I wouldn't have that power.