Facebook wants to use your Oculus data for ads because of course it does
To enjoy VR content on VR devices such as Oculus Quest and Oculus Rift S, you will need to log in with an Oculus dedicated account or Facebook account.
Oculus VR is a FAQ, and the usage data of Oculus is used for advertisements, "To build a more consistent experience and make it easier for users to find the VR community", providing advertisements for personalized VR applications It is for the purpose.
Also. Since it is possible to bring the connection of Facebook to Oculus as it is, multiplayer with Oculus and sharing of images and videos will be easier, and game play on VR can also be delivered directly to Facebook via live streaming I am appealing.