A major limitation of Intune and the Company Portal on macOS is the lack of management for app uninstallation. It would be great if you could also push the app uninstallation package through Intune, so that users can independently uninstall the available apps.
As an alternative, deploying an empty package could work, with the uninstallation handled through a pre-installation script. (https://github.com/erikstam/uninstaller/tree/main)