TLDR Yes

You are asking for things most people don’t know how to handle on windows let alone Linux

1. install/update drivers/package/apps etc. Yes the discover app runs updates for every on the system
2. Change settings deep in the os: Yes, kde has an extensive settings app, kde monitor show you all the logs, kde settings allows you to create more user accounts.
3. Because Bazzite is an atomic distro changing things in the Linux version of the Windows registry is not possible, (unless you’re a developer this is a good thing).
4. Thanks to apps like Bottles you can run exe’s too

All with a GUI