@Redistro Thanks for posting in our Q&A.
For this issue, if you want to uninstall LOB app, you can set the uninstall assignment to uninstall the app on the device group or the user group you wanted.
https://learn.microsoft.com/en-us/mem/intune/apps/apps-deploy#assign-an-app
To avoid any conflict, please remove the target user or device from the groups under Required assignment or Available assignment.
Hope it will give you some ideas.
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