Warren Buffet always praised blockchain technology, but he never praised BTC. I think he is not objective.
Eh, I don't think there's a reason to believe that he's lying about his views. He's made a lot of money doing what he does, so it's only natural for him to think that his way is the best way. That doesn't mean what he's saying is right, just that he's been successful practicing what he preaches up until now. Not that it has anything to do with Bitcoin, of course, because he's never had to deal with it himself and has nothing to do with his businesses at all.