Ya. As per my comment below, it's a) the dissonance between a 'tech view of BTC' and an 'economic/financial' view of BTC and b) the religious nature of BTC hype. And by 'religious' I don't actually mean 'religious' rather, the old 'religious arguments over programming languages and frameworks' kind of trope.

Commenting against BTC is sure to get you down-voted.

It's ok though, it's just one of many HN quirks we're all used to :)