There's nothing "uber" about being able to have a macro set up and cycle for hours on end without "rest". That's just a monetary difference between players, where some can afford a macroable keyboard / mouse, have a huge wallet to cycle with, etc etc.
Personaly, an Uber is and always has been someone with knowledge on how to handle this game in it's entirety and never associated to a profession level. People who are able to help others achieve something through teaching them "the ropes", while still maintaining their level of secrecy as to how they efectively maintain their economical balance in the game. That's uber.
People who know how to get stuff done, maintain a proper revenue are uber.
In this game information is power, and an uber is someone who holds this knowledge and does whatever he wishes with it.
In this game, having over 9000 hp, whatever item or whatever profession level, doesnt make you anything special, it just means you have enough resources to do so. If anything, it identifies you as somewhat of a narcissist if you believe this to be "uber".
Don't get me wrong though, while they are still great feats of endurance (not taking that away from the achievers), given the current context, it's quite meaningless... Before it used to be an effort to achieve them, whereas now it's really just resource management and macro spamming.