Asking the real questions!
Steam is mega neglected on my x because of a bug where it won't update games while the car is empty, you have to leave the door cracked to keep the games updating, and steam will only use at&t wireless to update, not wifi. Meaning downloading a modern game can take 6+ hours.
Elon does not care about x people so I've given up on this being patched. But if the cybertruck comes with steam, maybe Elon will finally care and update this cool, underappreciated feature.