The question is really not whether one name has more or less meaning is not the point. The point is why do the change at all? What purpose is served by it?
So far the only thing I can think of to changing Green Arrow to Arrow as a title is that shorter names are considered more memorable plus it would make more sense if they are going the way of Batman Inc with not only Ollie (or is that outdated too?), but also Roy and so forth.
I'm not trying to start an argument. I'm trying to figure out the "Why Bother?" of the name changes.
Yes, Starling is a bird...and where I live a noisy pest that are driving out the native birds. We consider them to be in the same class as Australia's rabbit population: a destructive nuisance.
Interesting choice of word by the creators of this show.