Thanks, I found it. Of course, the 'one-click' deletion of all user apps isn't necessary; deleting them one by one isn't a hassle. But I do need an option to distinguish between User and System apps.
It's not about deleting them just because they're UWP. Third-party apps can completely replace them. Except for Notepad and Snipping Tool, even if you delete the app store, most User apps will still automatically check for updates the first time you use them. If you block them from connecting to the network, it won’t let you use them until they update to a version full of bugs. Also, can NTLite add an option to prevent UWP apps from connecting online and updating to the latest version?
In addition, do not forget InboxApps, although they can be easily found by searching for 'Inbox.' It is necessary to split Metro into 'Metro-User' and 'Metro-System.'