I tried that once so I could save a game between android and iphone. After a day or two they couldn't "verify" me and wanted me to upload my photo. They can do one. So uploaded a hand drawn picture of a stick man, they then asked for my passport lol. Obviously I didn't provide it and they locked the account.
Anyway to put it to bed, here is the FAQ
For Oculus Quest 2:
Quest 2 requires everyone to use a Facebook account to log in.
If you are an existing Oculus user and have an Oculus account, you will have the option to log in with your Oculus account and merge your Facebook and Oculus accounts.
When you log in with a Facebook account, you can still create or keep your VR profile. So you might be Monique Smith on Facebook, but WarriorMama365 in VR.
For previous generation Oculus devices, including Quest, Rift S, Rift, Go and Samsung Gear VR:
Everyone who uses a previous generation Oculus device for the first time will need to log in with a Facebook account.
If you are an existing Oculus user and have an Oculus account, you will have the option to log in with your Oculus account and merge your Facebook and Oculus accounts. You can also choose not to merge your accounts and continue using your Oculus account for two years.
You can continue using your Oculus account until January 2023, but you will not have access to social features and some new and updated features. After that, full functionality will require a Facebook account.