I feel people (myself included) are drawn to notetaking/PKM topics because there's a fear that others have unlocked a secret to learning the layperson hasn't yet discovered.
In my experience observing my peers, aside from intellectual horsepower, thinking about topics from first principles is the best way to learn. This has nothing to do with Logseq, Obsidian, Zettels, paper, workflows, Literature notes, or any other fad.
Don't understand something? Go back a step and understand that. Even better if you have to explain it to someone else. Then see how you structure it into a latticework of knowledge, as Charlie Munger would say.