It was meant as a joke, but your reply is interesting. Why would you assume that the HN community is "beyond fashion" and particular opinions? We're human beings. We have flaws and biases that lead us to make irrational decisions. Some of the things that HN users do are hugely driven by fashion (in the sense of following ideas before they're proven) rather than empirical evidence - entrepreneurship has fads (lean startup, startup canvas, social businesses, moonshots, etc), software development flits from one methodology to another (agile dev, functional dev, etc). They're fashions that are trying to improve things rather than merely looking different, but that doesn't mean they're not fashionable.