True story, for example take Tesla's promise of self driving which was delivered back in 2015.

From Matt Levine's description, SpaceX has a governance model that explicitly makes it resistant to shareholder lawsuits. It's not a Delaware corporation.

It might or might not work long-term, but I wouldn't count on courts to help.

Corporations are legally required to maximize shareholder's value. If reaching that goal requires them to pretend to be transparent, or fudge the numbers that they show to the public, then that's what you can expect them to do.

SpaceX is run by an absolute ghoul who managed to get away with securities fraud ("funding secured"), what makes you think there's any accountability left in public markets?