Peter Schiff is the only finance guy that I know that can be so right about the U.S. economy and world markets, and so wrong about what Bitcoin actually is.
Most of the audio is really good and worth a listen:
https://www.youtube.com/watch?v=AF2DDrEaSOg (starts talking about crypto @ 24:18)
It still mystifies him that Bitcoin becomes a new form of digital money and store of value because of people's belief in bitcoin's core attributes as money (i.e., permissionless, deflationary, scarce, utility, divisible, fungible, etc). It never occurs to him, or he's not willing to admit, that PMs got their value from the same power of belief over time.
Sure Bitcoins are not backed by anything. But PMs are not "backed by anything" other than thousands of years of belief that has accrued over time. In time it becomes a self-fulfilling feedback loop.
Sure you can duplicate a crypto, but you can't overnight duplicate the "belief".
I don't think even the biggest and more informed gold promoters understand bitcoin, when they try to rationalize the seemingly "pumped" price of BTC against gold without accounting for the fundamentals - and then claiming tulipmania, pump&dumps, etc etc. Same goes for other classes of investors.
Most of these guys wouldn't even care about Bitcoin if satoshi had made the choice to issue 21 billion coins instead of 21 million - with the consequence being that the price right now would be at 2.6$ instead of 2600$. The 2600$ "threatens" them because it simply
sounds so high, while the 2.6$ wouldn't even raise an eyebrow. And that's the whole point really: Their objection is about what they perceive as a high price (!), which by consequence also affects the perception of what is considered "valuable". Something that costs 2.6$ doesn't sound so valuable vs something that costs 2600$, yet you can buy 1000 x 2.6$ - and it's precisely the same thing (mathematically speaking).
So this behavior is definitely irrational and based on psychological factors, biases, etc - rather than sound economic analysis. In the end of the day, Bitcoin is an asset that has a marketcap in the range of a successful internet application like whatsapp. It is nowhere near the precious metals marketcap. It's not even close to 4 months of gold mining production (annual mining production currently at ~110-120bn $).
When people don't even realize why Bitcoin has the price it has (low unit count), it's time to stop listening their "expert" opinions. It's like trying to explain to a stock market noob why berkshire has the share price that is has - and them insisting on it being overvalued because surely no stock can cost 250k USD.