The module basically removes the apps from the system. The system can't see the .apk's, so it's like they were never there - completely gone.
But if you remove the module, they will be back and should work again
so I've made one for my 5T and since i switched to the 8T now i needed one for OOS 11 - how boring would a new phone be without some Magisk magic:
The module disables a bunch of apps (Oneplus testing and debugging stuff & that google crap you can always download via Play Store), replaces the Roboto font with Google's Product sans (so you can switch via the Settings app) and adds some notifications and ringtones.
FYI: I own the EU version of the 8T (KB2003) and thats the only device i can test the mod with. It probably works just fine with the other versions, but be careful and backup.