What is "elaborate" here? I write out personal work docs in a wiki complete with links for cross reference and a semantic search engine. Is that elaborate?
I like that I often only need to ask a question once, and that I can delegate answering questions to the docs (where I've published subsections for the rest of the team).
Moreover, as someone with a bachelor's degree in Cognitive Science & Computer Science, I know from the literature and experience that writing things down improves your memory.
If I'm doing it to save my time and expand my memory, then it doesn't matter who else might read it.