When big-name financial experts make statements about cryptocurrency, we should look to see if they have some vested interest. If they are advising on a project or involved in a firm that has a lot of cryptocurrencies in their portfolios, it is a sign. Not necessarily a bad sign, because obviously if someone believes in crypto, they will want to participate in these things. But we should take it with a grain of salt.
All investors are following their own selfish motives, and if they need to hype something up, they will.
Regardless of their motives/incentives, most of the traditional investors we hear speak out positively nowadays, were the skeptics of the early years. It's a very interesting and pleasing shift, especially because this more or less is them admitting they were wrong, but without actually admitting it. It's a victory for every Bitcoin enthusiast, because their money flowing into this market will grant us a great source of wealth, and this process will keep going on for plenty of years.
The problem was that most of the traditional investors were thinking that Bitcoin was a scheme, fraud, outright scam, currency of the underworld, etc. It changed as soon as 'trusted' and well known traditional parties were starting to get involved in Bitcoin, and with how last year resulted in more professional parties to enter this market than ever before, the skeptics of the early days are slowly becoming the enthusiasts of the new age. Professional interest and usage = legitimacy apparently.