>They had the ability to monitor all of your transactions and if they didn't like you they could roll back or block your transactions.
Unlike, what, my established credit card company which still blocks me randomly when I'm traveling overseas even when I explicitly call their 800 hotline, sit on hold for 30 minutes, and tell some unempathetic worker "I'm overseas, don't block me"? Yes, thank goodness libra is dying, otherwise there might actually be some innovation against the exact things you just mentioned which perfectly describe the current state of affairs.
(Edit) I think it's fair to not trust Facebook with your currency, but keep in mind the players in the current system (governments, Banks, and credit companies) have hardly proven more trustworthy.