The virtual keyboard isn't used while gaming in regular desktop Linux. That is a steam issue, specifically a steamdeck issue since a regular desktop would use the physical keyboard to type in Skyrim.

I know about the OS the deck is running and that it's an arch form, but it's not a Linux issue, it's a steam deck issue since non steamdeck desktop Linux pcs don't have that issue because they use a physical keyboard.

What you are saying is like me saying that the inability to read Chinese is a human issue because I can't read it and in human. Naaah.

That doesn't make it a Linux issue. It's an issue with some component that is in a Linux distribution, but it probably has nothing to do with the Linux operating system. It sounds like it's specifically some component of the Deck at fault, not a part of Linux.

Sounds more like a skill issue

That's like pointing at an Android-based smart fridge, saying it doesn't run Skyrim, and saying it's a Linux issue, because android is based on Linux.

Try pulling up the virtual keyboard in Windows while playing Skyrim. I'd be surprised if the results were helpful.