Linux

What are you doing with your machine that would be confusing for your standard end user? KDE out of the box is good enough for my daily driving. PopOS, Bazzite, and Mint work great. GUI options for most normal computing things you'd do these days. The amount of customization allowed on an end user's machine is often minimal anyway. Plus, you sorta imply that the end user would be doing all this, instead of an IT admin preconfiguring a machine with Ansible or a custom install script. I think you may be over estimating what your typical business user does. It's mostly "Here's my chat, here's my browser, here's my 1-5 LOB apps, here's my printer. Can I change my background to my kids? Great."