I'm not sure how ability to learn Emacs and ability to construct a good knowledge base are more than weakly correlated.

I know dozens of people who use Emacs and dozens of people who have well-organized knowledge bases and while a few people have both that's about what I might expect based on random chance.

Some people might want to help their grandmother organize themselves better as they age, why do they need to learn a DSL and ecosystem instead of just downloading an intuitive app with modern UX sensibilities?

Is that offensive to you?