^
And then it was followed by this tweet.
One of a series of tweets in which they were using it, then weren't using it, then it was coming soon, then not using it, then using it, and next? Previously they've apologised for letting an intern run the twitter account. As far as sources go they're considering to be more amusing than factual.
1. Premine == good, mining == bad. If you don't know why mining is bad have a look at the world news headlines about the environmental crisis and look at how that is slowly being incorporated into government policy. Follow the white rabbit.
2. XRPL is now less centralised than BTC. Two more independent validators recently came online and Ripple is now only %22 majority and still ontrack to be completely decentralised, though maybe later rather than sooner. The technology is ground-breaking but regulatory issues are the last hurdle to full adoption and governments and banks don't move as fast as tech companies. There have been positive murmurings. Christine Lagarde, head of IMF, has been singing the praises of DLT to the world's central banks, but getting the stodgy old boys in charge to embrace the future will not be an easy thing.