My guess is that he himself is predicting that because that's a strong possibility and if he is right, his account would get ton of more street cred because he broke the news (not that he heeds it), and if he is wrong... Well, no one cares because it was a "rumor" anyway. I have to try that approach too.
So it is basically the safest approach of all of them because you can deny when it is wrong and you will be a prophet if it really happens. Some users say that it will not be true but who knows and Facebook suddenly changed their stance against bitcoin.
Leg cross as we wait for their Q1 report. Who knows, maybe they are holding like the Tesla company did. There are always rumors from crypto-world and this could be real if their report is out, so, let wait for their report. If this rumor will be true then bitcoin will experience some big adoption as more exposure will set in.