If that was sufficient to make you not want to use linux as a primary desktop: Cool. You would probably have been miserable the first time you had to use a terminal to fix a problem (which very well might be installing steam). It isn’t for everyone
But also: If you don’t think you have a need for windows (no gamepass, no VR, etc) then don’t bother keeping a drive. In my case? I know there is work to get WMR headsets working in steamvr on linux but I use mine maybe once a year at this point so it isn’t a priority to debug. And 8bitdo firmware updates are similarly rare (and I could probably get it working in wine if I cared enough). That basically just leaves gamepass PC for me and time will tell if I even bother to use the PC version of starfield or if I check it out on my xbox and then buy it on sale on steam if I like it.
At the end of the day: you know your needs and use cases. I personally like knowing that I can switch OSes at the speed of a quick reboot, mashing delete, sitting through 5 minutes of updates running, and then switch back in about 60 seconds when I am done. Good 2 TB nvmes have been going for about 100 bucks these days so storage is cheap. I could also have futzed around with partitions to share a drive but… why bother?