To be fair, you can say that about anyone. Nobody knows for sure what MS will actually do but so far he has shown as much conviction as anyone here on SN.

This is basically the same argument. Anyone can change their mind at any time for whatever reason. He's clearly changed his opinion since 2013. Could he change it again? Of course, but he's stayed pretty consistent for the last 3 years through a bear market.

Like it or not, being a billionaire and the face of a public company gives him more credibility in the eyes of the media than some random joe on the street.

It was only a matter of time before a rich public figure got bought a lot of Bitcoin. If it wasn't MS it would've been someone else just like him. There's no world where that wouldn't be the case. It's fortunate he's a pretty smart well spoken guy and not some dictator or enemy of the state.