No, it's not revealing at all. National Guardsmen are under the control of the governors. The governors of Texas and other border states could call up the Guard, but it's seen as an extreme step. It's expensive, and it's the wrong solution that would inevitably lead to a political firestorm if the Republicans did it. They know this, and sidestep the trap. The solution is for the federal government to do its damn job. The Democrat calling the Guard here is an abuse of power - which is totally consistent with how Democrats operate.