The difference is that the housing prices were clearly in a bubble and banks were intentionally packaging subprime mortgages that they knew were bad and selling them as a low risk investment. This is much much different than Bitcoin. I would argue that Bitcoin is the only asset class that is not currently in a bubble.
> The article doesn't prove the math is sound
I suppose you are right, but I still think it brings up some good points. The Bitcoin market cap is minuscule compared to any other established market. What gives gold its value? It is not that it is used in jewelry. It is that there is a limited supply of it, it can’t be easily created/counterfeited/reproduced, it is divisible, and it can be used to store and exchange value. Bitcoin has the exact same properties, but is even easier to purchase, store, and exchange. I fully believe that Bitcoin and Gold market caps will reach parity some day. Maybe it will take 10 or 20 years, but I believe it will happen.