The machine I paid for should behave like mine.

This is a simple argument: Apple has enough control to make the Mac cleaner, safer, and more respectful. If it wants that control, it should use it to defend the user.

The Mac should be a trusted personal computer, not a place where every app leaves a private mess and every owner becomes a part-time system administrator. Clean uninstall, visible app footprints, honest background behavior, and a better App Store are not power user luxuries. They are table stakes for an owned device.