Behavior Goal: "As a user, I want to easily select my target platform without any confusion information presented in the editor UI."
Since you can use Oculus and OpenXR together, it could be nice to have the following inside Plug-in Providers
Option1: auto deselect OpenXR when the user selects Oculus as Plug-in Provider
Option2: make a question mark icon + tooltip, tell people they have to unselect OpenXR to select Oculus in Plug-in Providers