The part about scrolling through your feed for 30 seconds, realising it's all crap and exiting is true. I unhooked simply because the content isn't interesting.
Also contrast with searches for articles / books (there area a great many of these online, if not always legally: The Internet Archive, Sci-Hub, Google Scholar, Google Books, and more). Wikipedia is often a good _start_ for exploration -- head to the references and start going through those.
I've found that online commentary is often quite thin on substance, even at better sites (e.g., HN and this thread). There are exceptions, but you've got to aggressively filter for it.