Valve has put a lot of R&D into making this literally the easiest thing to do on Linux. With most games it’s literally plug and play.
I like to believe it’s because everyone at Valve are Linux weirdos that just really really wanted games to actually work on their OS.
Of course the real answer is the steam deck. Which, incidentally, is my best purchase in the last 12 months.
I legitimately would have bought a Steam machine instead of my current computer if they hadn’t stopped making them. I loved the concept but the timing was just all wrong, since they came out when the PC I had was fine and I didn’t want to spend on a new one until I had to.