On youtube- I search for a video, select the result I want, watch it, then leave. I browse hackernews and discover random content.

Exactly, isn't it a little hypocritical to say that twitter users are simply "infinitely scrolling through the bedlam", while posting on a website that requires scrolling for content discovery? I admit that Hacker News has magnitudes better content than twitter, but it's ironic nonetheless.

Not exactly exactly though is it? HN isn't infinite scroll. It's scroll to the bottom, mental decision to click More or not.