Many people on HN who talk down against Bitcoin are indoctrinated into the current ideology. Anything that goes against the current ideology is refuted, ignored, dismissed as fads, bubbles, scams..etc Ideology is a powerful thing and it's hard to break out of it.
If you want to learn more about this concept, you should research about Slavoj Zizek's work on ideology. Bitcoin is not just technology, but a multi-faceted ideology founded around cypherpunks ideas, liberty, sovereignty, austrian economic system, free markets.
Even the way Bitcoin is developed (slow, methodical) and Bitcoin apps are built is different to SV way which is move fast, break things, iterate.
Bitcoin is a multi faceted beast like nothing else. It is a cross between computer science/cryptography, governance/game theory and economics.
In my opinion the economics of bitcoin is the core, which is kept in balance and managed with game theory and decentralised governance and it is created with computer science and cryptography.
In order to truly understand what Bitcoin is then you need to fully grasp all these 3 facets. Most people don't, they read the headlines or look at bitcoin from one of the facets and write it off.