It's funny, I remembered that exchange pretty much the opposite way - if you'd listened to those internet experts, you'd have been dead sure that a system that's been running for one and a half decades without major hiccups wouldn't work, a product that now has global brand recognition would never see adoption,... There are legitimate reasons to not like the product, eg how it facilitates cyber crime, power consumption, but that's not the focus of the discussion. And it's not like the judgements were all technically sound and they just underestimated the marketing appeal. They ramble on about how the bad guys have more compute power than the good guys, which is more of a distraction than a useful contribution.