Also, your query popups isn't what argv0 was referring to. That still uses /query, so it *is* covered by the alias shown. argv0 was referring to things that the alias wouldn't cover.
When you right-click a name in the notify window, it will display the query popups. In other words, right-clicking to query someone in the Notify window does in fact use /query.
In fact, I've tried to find a way to open a query window that doesn't use /query and as far as I can tell, none exists. Do you have any specific examples where /query is not triggered?