No, that's actually a bad analogy he just used. Originally it was, 31 billion zeitcoins(Who can also be divided into 8 decimal places) and 1 BTC.
He's purposely trying to change things to suit his flawed argument, same as when he said that cryptocurrencies don't use much cryptography.
Well, I totally missed that discussion, but yes, 31 billion zeitcoins
available in the open market is much more liquid that 1 BTC. Each having the same 8 decimal points.
1 fish in the market is infinitely more liquid that 0 BTC in the market.
Whether people will but it or not, that is totally different argument.
Thank you, hopefully you can also tell him that cryptography is prominently used in cryptocurrencies.