Here is why I think it is the way it is:
- The contours of this domain are very fuzzy: What are we talking about here? the fact that words like (P)KM and productivity were hijacked by corporate motives for most of their history does not help.
- The "emptiness" comes from "influencers" trying the cater to our incessant pursuit, as a society, of the new and shiny. Social media FOMO makes this worse. But The shallowness you are talking about have absolutely nothing to do with this domain in particular. It is endemic to our current world.
And fuzziness does not help. I appreciate the effort and enthusiasm, but we need to anchor/connect it to more established communities.
Is it about Business management / The future of work? Personal Thinking and Problem Solving? Personal Development? Personal Journaling? The future of journalism? Text Editors UX? Information & Learning Design? L&D (Learning and Development) ? Higher Education Note-taking? Digital research? Software studies? Digital Humanities?
These are all related real domains (google them)