And I think there isn't a good solution to this. Ideally you would enable people to make good choices for themselves, know how to handle the tools they use...
Interesingly enough they come to me to fix their printer and antivirus anyways, and I have no idea of what I'm doing since I haven't used Windows in like 15 years, except for updating my GPS and filling out time-sheets for work and stuff like that. And in the meantime Microsoft switches things around every few years and bolts on a new interface onto their office suite and then moves it to the cloud. I don't think it would make any difference if my relatives were using Linux in the first place. They would still need to ask someone to fix their printer drivers and handle big version upgrades. And if it was me at the other end, it would be way more convenient to me to help them.
I stopped advertising Linux to people who didn't ask me to... I'll tell them I use different things on my computer and why this software is way better. If they pick up on that and want to try out of their own motivation, I'll gladly help.
No it doesn't. If you don't care and just want anything that runs Steam, don't bother. Just pick anything, it runs fine on most Linux distributions, Windows and probably Mac. You're fine with tossing a coin. I'd choose Linux in that case since it's cheaper.
A proper conversation would be like this:
What shall I use?
Depends... What do you want to do with your computer?
Play games with Steam.
Alright, then use XY. Wanna know more?
No.
Fine.