For me, the goal of PKMs is to store information for later reference. I know that some people use them to learn, however I've never found this method to be use

For me, the goal of PKMs is to store information for later reference. I know that some people use them to learn, however I've never found this method to be useful for me, so I just stick to spaced-repetition (Anki) to help me learn the relevant facts. Done this way, I have two "stores" of information. In Obsidian I put information I don't want to memorize or at least not long term, like work related topics (terminology, the domain, etc), project planning, project details, roadmaps, and in Anki I put information I care about learning long term, like facts about X technology or language, vocab, etc. Point is, i think obsidian is not the right tool for learning. SRS sounds like a better fit. I'd suggest taking the effort to learn how to make good clozes (card type).