Along with hardware issues, where you may not have access to the software for the wheel or it might just not work at all. Games can also just not work. I know LMU doesn’t work, ACC can be a bit spotty at times as well. iRacing seems to be broken.

Unfortunately sim racing on Linux is not a good experience

Sim Racing is one of the reasons I am still on windows. I can play most of my games nicely with Linux, but I spend a huge chunk of time racing in the evening. And it is just very hit and miss, and hardware can be a bit of a pain.

Unfortunately it is easier to just stay in windows than reboot every time I want to play something else.