Who decides what things "actually are"? You? Laughable, as you like to say.
Here is the bottom line, whether you like it or not: until someone PROVES that they possess talent they are all talk, their's or someone else's.
A great chef can get accolades, perhaps because of his reputation or his training, but if the food he produces tastes like s***, he has no talent as a chef.
A big strong race horse might be described as having talent, but until he wins races, he has nothing but talk.
And when you look at Andrew Miller, someone a lot of people think had POTENTIAL (different from talent), and see that he has failed over and over and over again, no one in their right mind can say that this player is talented, not yet anyway, and probably not ever.
I think you are getting confused with the difference between potential and talent.