On a meta-level, invoking "virtue signalling" is itself a signal that you want to ad-hominem the human subject rather than discuss and resolve the issues.

It is the opposite of rationality, and it's a bit weird that so many People Who Think They Are Rational are into the idea.

It's entirely irrational to give this level of attention and resource to an issue with such relatively little impact, particularly when noting the contributing events that led up to this issue were largely ignored (and directed by the same presidential candidate many of these organizations openly supported). Virtue signalling is the correct description. This is more about image than substantive change.

How many are from these 7 countries and do not have a green card? Now how many have been killed in Libya, Syria, or Iraq?

'Virtue signaling' is a criticism of people who put social approval before productive work. Someone who 'virtue signals' isn't opposed to a cause, though they exploit it out of narcissism.

But in this case, the entire point of these EOs is that they are specifically crafted to interfere with gov't agencies, while appearing to cut through red tape. It's red meat for the base, but that's just a bonus.