You're not really saying anything, though. For every tech hype that has failed, there is another that's changed the world. This IS changing the world and our industry, regardless of whether it reaches the heights of the hypers.
I mean you're just stating that sometimes tech doesn't meet it's hype. What's insightful about that? It's a given; cherry-picking examples doesn't prove your case.
You're attributing a whole lot of agency to things that might have different factors.
I can't downvote becuase though I've read HN since 2007ish, this is a new account. I would, however, probably downvote threads like this becuase out of all 600 comments, I don't think very many people have learned anything and a lot of blatantly false and sometimes racist stuff has been shared by people of every persuasion. I don't think these discussions are productive at all, but it makes people feel good because they're "fighting" for a cause, but they're still just a rate in a cage.
Is the cause of Gaza or Israel bettered by this comment section?