I have to disagree, at least in my experience.
Windows causes more problems, both for my mum and myself.
Her only purpose of a PC is basically to open a web browser, answer some mails and plug in a USB from time to time. For her, Mint never made one single problem, except when the hard drive failed.
She really liked the “boringness” and the old Windows charme.
And for me, Linux never made any big troubles in general. When I used Tumbleweed, there were a few papercuts (e.g. graphical glitches, program freezes, etc.) due to the bleeding edge, but nothing major.
And since I use Fedora Atomic, I completely forget that I use an OS in general. I never have to update anything, I can’t break my stuff, etc…
It’s the most “boring” and user friendly OS I’ve used, even more than MacOS and Windows. Only Android/ iOS are better in that regard.
But I’ve never seen my OS just borking itself. If that should ever happen, I can easily roll back in a second and it will work again.
And you need to have at least a rough understanding of what’s happening to fix it.
If you can fix Windows (which made way more problems after updates for me) then fixing Linux is way easier. And if you’re an average person, then you go to a local repair shop and say “My PC broke” and they reinstall Windows for you.