Sounds to me like Facebook is trying to become the Wechat of the West ... (as per an article 2 days ago explaining how Wechat could be central to every payment in a daily life )
Mark Zuckerberg is very impressed by WeChat as a platform. That’s probably the best way to understand that effort. “Crypto” is less a technology and more a loose governance method because no Western company can have the authority that WeChat has in China.