I set up my mother on Linux mint in 2013~ and she genuinely didn't have issues with it (until the hardware finally kicked the bucket).
She had much more issues going from Windows XP to Windows 8, which was something she had to do around the same time for work.
This is a reminder that Windows 8 is coming up on 11 years old. :D
I had to install some Windows 11 machines for work and I was honestly dumbfounded by how convoluted it was.
The "problem" is that there's only a few people selling Linux laptops and they're doing it to target a niche market.
I have to seriously wonder how much market cap there would be if people had to install Windows themselves.
Another irony is that most folks who are making an autonomous decision to use GNU/Linux can probably figure out how to install and update it, so if you want to make good money pre-installing, selling to consumers, and supporting/updating the OS, you need to make a massive marketing push to convince folks to switch.