Why should this be news? It seems like our crypto news channels are pulling bag of celebrities, CEOs, big economists, every time some important person talks about crypto is enough to become headline on all crypto news channels.
Most of it is just clickbait.
But I do think Sergey Brin might be seen as more of a visionary than most of those celebrities, economists, etc. after founding Google. He seems legitimately fascinated by various cryptocurrencies and like Tim Draper (another tech/VC visionary), he thinks they'll be heavily integrated into society.
To be honest, I'm pretty interested in the opinions of tech people who have a knack for social trends. Price predictions are a dime a dozen, though.