This makes a pretty huge leap from "Facebook = bad" to the Libra foundation not having sufficient controls on their treasury and becoming insolvent because they didn't actually back every Libra coin with real currency.
Say what you will about Facebook, I'm certainly not a big fan of their track record on privacy, but they're doing this right. They're setting up an independent foundation with representation from 100 companies, and every one of them has an equal vote. The Foundation will be regulated by swiss banking law, which is one of the most strict in the world, so I would be highly skeptical of any claims that they will be "insolvent" any time soon.