My family is just casually using Linux now. I didn't even have to "train" them when I switched. The only thing we keep windows around for now is the unbelievably awful Cricut software, which is clearly a ramshackle product barely managing to run in Windows as it is.
I also use it for work, and the only significant delta I've noticed is that Zoom doesn't want to share individual apps in my setup. (Maybe it does in Wayland, I dunno.) It has otherwise been quite a while since I've had to tell someone "No, I can't do that, I'm on Linux."
The marketers for Windows face a problem they will be incapable of perceiving or acknowledging, which is that they are now the primary problem with Windows. Their need to change things just so they can say they changed things, their need to pile another feature on top of the ever-larger tottering stack of backwards compatibility already in place, their need to murder my experience using their product with ads so they can get another $3/year of revenue from me, these things that they did are the primary reason I switched away, am staying away, and am advising people around me to do the same. Eat that seed corn, marketers. Who needs $25 billion/year in revenue anyhow? A pittance, surely.