Follow the rationale:
1. Nation states ultimately control three key infrastructure pieces required to run data centers (a) land (protected by sovereign armed forces) (b) internet / internet infra (c) electricity. If crypto ever became a legitimate threat, nation states could simply seize any one of or all these three and basically negate any use of crypto.
2. So, if you have data centers that no longer rely on power derived from a nation state, land controller by a nation state or connectivity provided by the nation state's cabling infra, then you can always access your currency and assets.
If there's one large orbital datacenter, then sure, ASAT is a threat to it. But if it's a dispersed swarm like the Starlink system?
Good luck making a dent in that. You'd run out of ASAT long before Musk runs out of Starlink.
Starlink can even bounce data P2P, from one client terminal to another.
And how does decentralized ground infrastructure save you from a centralized executive?
Uncle Sam could bring Starlink down, probably. For anyone else, that would pretty much require WW3.
Executives don't matter as much as you think they do. No credible executive is going to cave to random death threats, and carrying them out would cause new executives.
Now, would SpaceX eventually become a shell of its former self without Musk calling the shots? Maybe. But if the shell you're worrying about is Starlink orbital shell, and the time you're worrying about is today and not in ten years? Killing Musk doesn't help you much.