Coin Facebook has very tricky developers. I believe that they can do a lot of secrets from a simple user. I would not trust them. The US government also suspects something.
Facebook started on a wrong foot about their crypto and I use to respect Facebook until I lost respect for them after they came up with their own Libra coin because I realized that Mark lack integrity. I could still remember the fight they gave to ICO campaigns then, the hatred was so much for cryptocurrency that any project that would have been successful them would just cancel the social media campaign for Facebook because they kept blocking them.
only twitter has been very supportive of cryptocurrency and they are the ones that really deserve to come up with a cryptocurrency plan, not Facebook. As if that was not even enough for them, their selfishness as usual also wants to dominate the cryptocurrency market just like they have done to other social media platform.