How do you know it is really there? If it was a spy that good how could to stop him or prove his existence. Only a superior spy can take down another spy.
Because it automatically scans every enemy player within draw distance, gives you an alert and puts every player in draw distance in a list for you to click and target.
Unless you are a hunter with track humanoids you would not realistically have access to this information without the addon.
Should ability tracking addons be blacklisted as well such as Omnibar? They do the same thing by showing ability usage nearby alerting you that there is someone close, just can’t target them or see their name.
I use it but I still rotate my camera since Spy only tracks so far and my view distance is further so most times I see the player before Spy picks them up, it is nice being able to target them though.
All this to say that I don’t really care whether or not Spy is broken, won’t hinder my gameplay.