But the thing you quoted me saying is what ultimately does provide a rational justification for bitcoin having a market price.
So basically what I'm saying is those ideologues got the right answer on their math homework, despite having made some mistakes in the calculations.
However not everybody who invested in bitcoin is a mistaken ideologue. I'm not (though I'm not anyone important, just a guy). Certainly Satoshi was not. He acutally "worked the problem correctly" and got a valid answer.