Over the past few years, my personal experience/perception is there's been less and less people with a technical grounding in crypto/blockchain who bother to engage on HN (on CT, it's often dismissively referenced as "the orange site") because not only is there such a strong anti-crypto attitude, but usually it's based on pretty shallow or often wrong comprehension of the tech/mechanisms.

I agree that it's pretty pointless to argue though. Even when blatant misinformation gets cleared up, or clear examples of how the tech is actually being used are outlined, most of the conversations then end up at "well, I don't see the value of it so it still must be useless." ¯\_(ツ)_/¯