Personally I haven’t. While Linux is imperfect, choosing the right distro makes the rest of the experience straightforward. And with it’s whole complexity, I find Linux more user friendly than Windows. Even driver issues, broken shadow file ownership and KDE specifics only made me more confident about my choice to use Linux after I solved everything.
True but that’s far less of an issue for most mainstream distros. If it works on one Linux distro then it probably works on another or a reasonable tech person can address the missing dependencies.
While I don’t love flat packs it’s one thing they do tend to solve.