It's pretty simple really: crypto is a solution to a problem we apparently don't really have. If you find the problem it solves, HN won't discredit that, the opposite is the case. Many people here would like to be enthusiastic about crypto, we're just not given any reasons for it.
What HN rightfully discredits is the cryptosphere, because for every thoughtful person driving progress forward, there appear to be hundreds, if not thousands, of scam projects trying to separate idiots from their money. There is nothing respectable about such a space, so don't expect the public, and this includes the hacking scene, to be infinitely open minded about it, if you're not bringing substance to the table. That response isn't hate, or irrational. The planet is burning and crypto enthusiasts are contributing a significant share to that, I feel exactly zero incentive to applaud these efforts.