A very important article!
Particularly you are right on the money that zettels are atomic elaborations on the read/understood aspects of a topic that are then connected in a way you can retrieve at the point of recall. Sohnke Ahrens does not understand networks but he understands note taking, so he passes on bad ideas such as ID your notes on timestamp, which is picked up by Obsidian et al. Luhmann worked on analog notes, so he HAD to stash everything on notecards and drawers and used datetime stamps for ID, our networks and connecting systems are far more sophisticated.
All things considered, zettelkasten is actually very simple and efficient if you pay attention to what it is NOT.