He was right to a certain extent, but he failed to realize that comparing bitcoin to checks isn't valid, since bitcoin is limited in it's number.
If there were magical checks that complete transfer of money as fast as bitcoin, and if they were capped at 21 million as well, they as well would have value to them.
This W.B. has no logical thinking to his head, i'm surprised he even achieved anything in his life.
You can't say the great Warren Buffet has no logical thinking. He got to where he is today BECAUSE of his thinking. He's a great man with great views. Don't judge him just because his views on BTC differ from yours.
He got to where he is today because his father already owned a brokerage. If he was an average Joe, he would be still washing cars probably.
The only reason he (and his alikes) is talking bad about bitcoin is because it's something that he obviously doesn't understand. Also, he is protecting his fiat and stock assets by doing so.
People should always question those in power, w/o that there is no progress to be made.