Remember, this is basically your own personal Wiki. You can either embrace and accept a rigid organizational structure or not. You are signing up for a lot of up front maintenance and design this way. The alternative is to heavily use links, tags, and other tools that make it easy to find data later.

For a personal knowledge base I think the latter approach saves time in the long run. I have clusters of well organized information. Well tagged and linked. I can always find my movie ideas, projects, and deep thoughts when I want them. I like the idea of just curating the clusters I care about. Just enough organizing. I then have a few highly connected entry points to my clusters. Often I find people don’t link enough in their Obsidian. It’s free and puts things in a more graph oriented layout that the tool can show you.

Edit: oh, also remember, these are text files. Grep still works. Also, we have very powerful CLI LLMs to summarize and categorize text data rapidly. Like “suggest 3 tags for this document based on <prompt magic here>. :)