You know that everyone back in the early days was spending their BTC to buy items and anything they wanted right? Bitcoin was seen by most as a currency.
The "pizza guy" was an early Bitcoin developer that was in email contact with Satoshi and perhaps we should start respecting the guy and his decisions.
Not everyone sold too early all their Bitcoins although most did. And then they tried to make more understanding the mistake they made.
The name of this ex Bitcoin dev is Laszlo Hanyecz and he still made more than you from Bitcoin that is calling him the pizza guy.

To the rest that are saying that Bitcoin hasn't failed, I don't think that we can judge Bitcoin by price today. The goal set is 20 years later or more. If Bitcoin manages to keep being an asset as a counter measure for inflation then it will be great. Although, is this what it will be? Or perhaps this is how we see it today and discuss about it.