Do you know why those clauses are in the legal agreement? its because otherwise they can't make the slam cameras work. Which means you need light houses.
Also when you submit a bug, I'm pretty sure it uploads the state of the SLAM map, which would be impossible if they didn't have the legal cover.
Now thats not to say that if they had the tech they _would_ use those bits of information. However they don't because they really don't have the tech yet.
Firstly the features that the oculus extracts from the SLAM cameras really arn't great for room mapping. Well, the cameras are fine, the feature extractor isn't. it works short term, but not for long term, or dense reconstruction.
Secondly, streaming 4x slam cameras at 60hz isn't trivial in a lab, let alone on with a battery on wifi on a generic internet connection.
Thirdly, facebook dont have anywhere near enough GPUs do the required classification/mesh generation/segmentation etc.
Finally there isn't a RGB camera.
> Environmental, Dimensions and Movement Data: We collect information about your environment, physical movements and dimensions when you use an XR device.
> We use information we collect when you use Oculus Products for the purposes described in the Facebook Data Policy under "How do we use this information?", including to provide, personalise and improve the Facebook Products (including seamless integration between the Facebook Products); to provide measurement, analytics and other business services (including ads)
https://www.oculus.com/legal/privacy-policy/
It's right there in black and white, they measure the dimensions of the participant and the environment, link it to a Facebook account, and use it to target ads.