I think the argument is that it's messed up that a large debt swap from xAI kept Musk's margin on Twitter from being called by his investors, and now that debt is being absorbed by SpaceX.
Whoa, I had to do a double-take on the Dorsey mention -- like, didn't he take the money and run while laughing at the folks that overpaid? But it seems he's retained a 2.4% ownership stake in Twitter/X, according to Wikipedia:
Still, don't make the mistake I did, which was to read the above comment to mean "he put more money in at the time of the buyout", since he was called an "investor in X".