Same for me for any Meta product, except (as I recently found out), Oculus. For some reason that was fine not asking for my number.
It's no secret Instragram has an issue with bots. Meta probably wishes their VR platform had the same problem haha.
They want you on their games marketplace, and they don't want you to return the product/make a consumer complaint. Plus there aren't any bots to worry about when the cost of entry is a few hundred $.