To be fair, someone with a more basic grasp of computers probably has fewer use cases that Linux will give you trouble with. I installed PuppyLinux on some ancient machine for someone I was renting from in like '08 and it was fine for her, but that’s because all she ever did was look at YouTube and check her email. It didn’t have any of the features of modern Ubuntu and the UI was clunky; if memory serves it didn’t even have DHCP.
But if you tried to do anything more complex, you’d better be ready to learn a thing or two.
Today it’s still pretty similar. Ubuntu and GNU at large have come a long way in the past couple of decades, but you still start running into issues when you get to more niche use cases.
I’d probably be running Ubuntu as my daily if Solaar worked properly with my MX Ergo, but it doesn’t, so I can’t. I guess I could go learn how to make contributions to patch that myself, and I may at some point, but at the moment I have stuff to get done and dealing with an unexpected hiccup in my workflow too often brings everything to a grinding halt.