But again, Joplin is a note-taking application with synchronization capabilities
This is what I like it for. Zotero has URIs for each element, making it possible to link to these elements from somewhere. These URIs can also be exported with the BibTex files.
Maybe adding this to the options of the Plugin could be an idea?
Here I meant the config screen: BibTeX Plugin: UI/UX Document
My intention was to add the URI to the citation (as it is accessible in the BibTex file) instead of the DOI or an URL.
As I don't use Joplin to publish my notes, I rather prefer to link to my files than having a link to a website. If I collaborate on a note it could be handy to have the DOI. This is why I suggested a field in your config screen to make it possible to choose. If you have a closer look at that Obsidian Plugin it might get more clear what I mean.
Thank you a lot of taking care of this Plugin anyways.