Zettelkasten is great for researchers. I actually don't think it's that valuable for practicing technologists. The general practice of taking notes and connecting ideas together is of course useful, but most technologists don't need such a sophisticated system.

Amid all the fanaticism that grew around zettelkasten method the past few years people have forgotten and de-emphasized the fact that for Luhmann it was not a "second brain" to be referenced on demand, it was explicitly a system to support writing. It is tailored to help researchers write papers. It shines if you actually need a system in which to keep notions coherent and organized so that ideas are clear and citations precise when you need them during the writing process. If that's not you, the overhead probably isn't worth it. Just keep a notebook.