good point about the danger of ‘feature bloat’! the One Plugin to Rule Them All was very much tongue in cheek and had more to do with the various points @msteffens makes, in particular
Since this is directly about one of my favourite things:
…let me explain. I would like to have a full citation imported with the metadata section so that I can quickly copy it without having to go back to Zotero or another program to get it. Not in the sense of a reference manager, but because I might be composing an email and want to share the full details of the reference, or as part of a lecture draft. Having to go through another program for this feels tedious, when it seems to me that if I can extract author, title, etc to Obsidian without problems, why not also the full, styled reference? It’s really just for convenience 
hope that clarifies the use of that, but I think it also highlights the difficulties - we all want slightly different things 