No, that's reductive BS. The GSA is an independent agency of the federal government:

[T]he term refers only to those independent agencies that, while considered part of the executive branch, have regulatory or rulemaking authority and are insulated from presidential control, usually because the president's power to dismiss the agency head or a member is limited.

Established through separate statutes passed by Congress, each respective statutory grant of authority defines the goals the agency must work towards, as well as what substantive areas, if any, over which it may have the power of rulemaking. These agency rules (or regulations), when in force, have the power of federal law.

The president DOES NOT have the power to fire people from this agency, nor change its rules without involving congress. Congress made this agency, and the president's job is to oversee its administration. Despite being the head of the executive branch, the president doesn't have direct authority over the GSA.

They use the spoon as a protest against the "fork in the road" email.

Why do these government agencies keep complying in advance? Why are they giving ground in little ways for nothing? Is some of the GSA leadership loyal to Trump?

As a person who isn't there and doesn't have my livelihood directly threatened yet, it's easy for me to criticize. With that said, why aren't the federal employees doing more to keep these people out?

Why aren't they physically blocking access to sensitive or classified areas? If it's illegal for them to access something, try to stop them. That's not breaking the law, it is following the law. If they threaten to call the federal marshals, make them follow through on the threat. If they hook up a new server and walk away, disconnect the server. If the boss gets fired for not letting them in, then the new boss says to let them in, say no. Why isn't IT disabling ports in the room they're in?

Like, if it's illegal for them to be there, act like it

This is one of those times where we should apply the phrase "do not comply in advance". They didn't take legal action yet. Make them take legal action before the company changes policies. That's why I'm so mad at companies like Target that just folded immediately.