I think this is more reflective of your own position in the tech industry.
Your perspective is common and I see it a lot, but primarily in older and jaded developers.
When I switch cohorts and work with younger people in the real world (not chronically online) it’s a complete 180: Back to being excited about tech and the future, not really dwelling on the things that HNers complain about because they’re too busy looking forward than back at the tech world.
Are you sure it’s because they’re “too busy looking forward” and not because they didn't get to experience how free and open things used to be, and thus don’t have the context to see how far we’ve fallen?
How does this younger cohort feel about locked down devices, App Store distribution and the like? In my experience younger people don’t think about it at all, because they aren’t aware of what the alternative could even be.