Sure. Guilty of what? Interfering with a contracted service? There's no practical way of proving anything he did was the single thing that caused a death or failed to prevent one. As for treason, the US has an admirably narrow definition, and the US isn't at war with Russia.
All the angels-on-the-head-of-a-pin discussion is just side-stepping what's really going on: people want to punish Musk because he interrupted some of streams in which they were wetting their beaks. They're behaving like a gang that thinks he took some of their money. The way people talk and write is not dispassionate debate over whether this is even a matter that rises to a level of some kind of humanitarian crime; they're bitter and envious, and bitter and envious people are often vindictive and petty. It shows.