Yup, that’s been my experience with getting people to at least consider Linux as well. The first thing they ask when I tell them it’s a different OS like Mac is, “so can it run XYZ?” Most people don’t actually care and just want something that runs the apps they use.
Interestingly, my mom (a Windows user her whole life) seemed just as alienated by macOS as by Linux. Her work gave her a Mac and she couldn’t understand anything after about a week so she just asked for a Windows system instead.
The problem would be that graphical UIs can look very different. Each distro with all their supported desktops would require documentation. The more I think about it, the more I like the idea of a short introductory documentation for people who have no clue about linux. Debian claims to be the "universal operating system", but new users are usually directed towards Mint/Ubuntu/PopOS, but why? There's a possibility here.