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.
my disappointment in Linux has lessened over the last few years as issues are being resolved.
Currently my only real disappointment is driver support, but that’s less of a flaw on anything linux, and more of a flaw on the providers.
That being said, I also am disappointed with sound management. Trying to do anything in that hellscape on most distros leaves you with a pounding headache. It’s a monkey-patch of multiple handlers that gets confusing really fast.