It’s mostly just a stereotype. I know plenty of young white femboys who use Windows, and I’m a Linux user who is young and white but definitely not a femboy. I would say 90% of Linux users probably know how to program though.
Just made the switch at the end of December alongside making my new PC. Feels very refreshing to actually be in control of my own computer. I’ve barely run into any issues gaming either, which is a welcome surprise - Proton remains one of the best things Valve has ever done.