I am all fine for anyone to disagree with cryptocurrency projects and the idea of putting everything on-chain or a social network fully on-chain is also a bad idea which I also think that makes no sense. But the extreme idea of banning all of them or thinking all these projects will survive or using a false generalization towards all cryptocurrencies if one of them has an inefficiency in its consensus mechanism, then this is where I disagree with that.

It's interesting to see on a site that calls itself 'Hacker News' where the whole point is being curious about upcoming startup projects or technologies.

Theranos turned out to be a scam with many investors losing their money, does that mean all startups are scams? No. So given that many companies like Stripe, MoneyGram, Namecheap, etc have re-entered into cryptocurrencies, perhaps they are also aware that some of the ones they have chosen to use have a use case?