

Sadly, they are. What you can purchase and what you can legally drive are governed by different rules. In the EU, a vehicle doesn’t necessarily need to have EU type approval to be imported and registered.
That’s why you can, find non-EU-spec vehicles on European roads. For example, red rear indicators, even though EU-approved vehicles generally require amber indicators.
The process is tedious, and there may be modifications involved, but nothing outright prevents you from getting a Cybertruck individually approved and driving it legally on EU roads. I know of 5 or so cases, where somebody jumped through those hoops.

There was the Helldivers 2 debacle, where they retroactively wanted you to create a PSN account to continue playing the game. I’ve heard from a few people, who got a refund over it. The automatic system didn’t work though, they had to write with the steam support directly.
This isn’t exactly platform support. But I think, if platform support was/is listed on the store page, you would have a stronger case than Helldivers 2 though, where the third party account was listed on the store page.