A PhD student facing difficulties with his 6 months ZK

You’re absolutely right!
I already use it so that my Osidian notes can refer to my “literature notes” written in Zotero.
I managed to have 2 ways sync of my Zotero notes but in the end I don’t really need to edit my zotero notes in Obsidian.
The game changer for me is to link my ZK notes to a specific part of a Zotero note, and being able to open the source pdf in Zotero within a few clicks.