SpaceX is amazing, but having Elon Musk as a critical geopolitical asset seems rather dodgy given his loud anti-Western comments recently.
Though I think the comment that's most indicative of Musk's actual mental state recently is "super rich ex wives who hate their spouse should be listed under the 'Reasons Western Civilization died'". :D
Of course he is often wrong about things, and has bad takes. And he can get angry and competitive. He is pretty petty. But if that makes somebody mentally unstable there are a lot of unstable people around.
As in, a person can be a screeching lunatic on twitter yet have two companies that are hitting milestone after milestone.
The achievements are what's relevant but everyone is glued to what's tweeted.
It's not a hard lesson to learn.
And, back on topic, dependency on infrastructure provided by a company lead by someone who is publicly campaigning for you to surrender and occasionally publicly threatens to switch it off is a more conspicuous security risk than most.
The fact is, in actual action, rather then a few tweets throwing ideas around, is there any other private person who help Ukraine more?
I think its kind of depressing when you have pro-Ukraine people shit on Musk, including the government itself, given that without him they would be in a far worse position. But that's the thing, in war, give a hand they want a whole arm, and if you wont give the arm, they will call you an enemy. That is a rational position to take for a government that is in a war, but everybody else doesn't have to parrot the messaging.
The Soviet Union in WW2 was the same way with the US. Here have this X any Z. Stalin "but we also want Y, A, B, C and more of X. The evil capitalist wont us to fail because they don't want to give us C".
It's possible to want to end the war without loudly and publicly endorsing explicitly Russian chauvinist positions like Crimea being "Khruschev's mistake" (screw the Crimeans that voted to continue to be part of Ukraine when they actually had a free and fair vote on the issue), Ukraine having an obligation to be "neutral" after its surrender to ensure they can't acquire any allies to protect themselves when Russia comes back for Odessa, and NATO having no reason to exist. It might be rational for Elon to believe any armistice is going to involve some concessions to Russia, but he doesn't have to parrot their messaging. (Or indeed comment at all: the main reason why you can't think of any other private people that have helped Ukraine more is that CEOs of other companies supplying Ukraine aren't quite so active on Twitter)
I think it's kind of depressing that Ukrainians have to trust him whilst he becomes one of the loudest public voices calling for a settlement on Russia's terms, and kind of understandable that they don't trust his motivations when he takes more reasonable decisions like declining to extend Starlink coverage to support an attack on the Russian naval fleet.