I can't see other reason for Facebook to be raising money if its not to back its own decentralized crypto. FB wouldn't need to raise to issue a stablecoin. Everybody in the original topic said FBCoin couldn't replace bitcoin. While I agree that the ultimate store of value will remain BTC, I think FBCoin could easily surpass BTC in daily usage and, therefore, market cap.
I think they had still the chances to get the success for their cryptocurrency but it take some time to reach in the centre of the people but once they get involved with their definitely accepted as like the previous cryptocurrency.