Officially it is Meta. Facebook is owned by Meta but the Quest headset is not a Facebook product. I get it, it's easier to say Facebook for everything owned by Zuk, like saying Google for Youtube instead of Alphabet.
But it is not precise nor true and plenty of comments here are saying "just leave Facebook" while OP did not post about Facebook nor having a social media account there.
And TBH, I think all VR headset are kinda ugly, it's either big rectangle brick on your head or big round brick on your head.
You already answered yourself, use them as your !homelab@selfhosted.forum
You can start with an OS like YunoHost if you don’t feel comfortable. Next step, to mee, would be an immutable Linux docker machine with podman.
But YunoHost is already a good start and you can have a multimedia server, nextcloud or anything else (example, paperless ngx to scan, organize and store your important documents with OCR to search them)