I don't think Jared Isaacman is interested in PR stunts. He actually seems to care about the science and exploration parts of NASA. Actually, he seems to care about all of NASA.
Isaacman definitely did not pass up his golden opportunity on Pesach to light the most epic menorah the world has ever seen!
The $20 billion dollar moon base didn't seem like an announcement grounded in reality, although maybe that was less a PR stunt than the fact that NASA must (literally) shoot for the moon to stay politically relevant.