Federal executive agencies have to be loyal to the government because they are the government. Working for the government and refusing to do what it wants is at best dereliction of work duties and at worst treason.
There are exceptions to that - government employees are not required to follow illegal orders. The law says you can't be retaliated against for refusing such orders. There are also legal protections for whistleblowers reporting wrongdoing, at least theoretically (ask Snowden about that.)
This doesn't apply to executive orders renaming things of course, since they're not illegal. But the point is that working for the government is not some sort of legal suicide pact.
There are exceptions to that - government employees are not required to follow illegal orders. The law says you can't be retaliated against for refusing such orders. There are also legal protections for whistleblowers reporting wrongdoing, at least theoretically (ask Snowden about that.)
This doesn't apply to executive orders renaming things of course, since they're not illegal. But the point is that working for the government is not some sort of legal suicide pact.