The #1 OS is slow and crashes all the time. The #1 email client takes 10s to load on my mother's laptop. Most popular products are slow, buggy, filled with spam, & filled with dark patterns. Enshittification won. FAANGs are the new IBM. Let's build better stuff.
Their entire life was in an environment where nothing was stable or cohesive or efficient and everything was either "free" or rented. They don't recognize what they're missing or why it might matter.
So as consumers they don't know to care when you build better stuff, and as producers they don't even know what it means to build better stuff. And soon these people will graduate into leadership and management with the same understanding of the world.
Surely, there's plenty of opportunity for the rest of us to keep quietly rescuing these janky projects from disaster, shoring them up as their sloppy compromises overtake them, but unfortunately it's very possible that it'll be a long while still before a strong and viable demand for "better stuff" returns.
Maybe it's not obvious to you, but many of your real-world colleagues and role models don't visit HN or anything comparable. And they're still working at the desk next to you, and in the office you aspire to have some day. For all that stuff like this might feel justified or even necessary, it's not. And if you're finding that it introduces difficulties into your life or psyche, you are entitled to and capable of quitting altogether. You don't need to try to moderate it.
(And frankly, I personally don't even know what you're doing on GitHub so compulsively. I didn't even realize that was a thing, if that helps speak to how irrelevant it can be.)