With multiple names of an item currently a subscriber knows only about the one explicitly selected. Change by someone on one of its other names won't be notified to the subscriber. Also the subscription is not shown by the navigation element for one of its other names.
"name": [ "logo", "python" ],
If you subscribe to logo the navigation element offers subscribe for python. I have not checked but I guess one only gets a diff mail for changes on logo.
The navigation link should tell subscribed already by the other name.
A similiar problem exists with quicklinks