Hmm...No, I don't agree with any of this.
1. Aiming is only objective in the sense that (with a given set of cloth and ball conditions) there is a point of aim (by which I mean the direction the cue is aiming at cue ball contact that will pocket a ball at a given speed. As any experienced player would know, freshly polished balls will behave differently from balls that are dirty and sticky from contaminants. Even different brands/types of polish will make the balls behave slightly differently. There is no reason to obsess over this, we make adjustments for this without even being aware most of the time.There are actually several lines of aim to pocket any ball, but lets forget about swerve and deflection for a moment.
How we perceive and arrive at this point will in some sense always be subjective to the individual. I no longer buy (actually I did buy several Dvds from people who claimed this) the existence of a perfect, "objective" aiming system that would fit every one and every situation. Granted, there are some ways to arrive at the aim point that may be better suited to more people than other rival ways of doing it, but that is it. I am also sceptical of the particular system which is claimed to be the answer by most of the active members on this sub forum.
Once a system is adapted to the individual and internalized it is, in a way subjective and can no longer be viewed as objective in any really meaningful way.
2. Top players play with the experience of having played millions of shots and I don't believe for a second that they consciously aim every ball. They make instinctive adjustments even within the same game, as the balls get dirtier etc. There is no system for that, or at least none that I have heard of. Besides, if you were to consciously think of every little aspect of a shot, your brain would be overloaded and you could no longer perform at the highest level. Do you think top musicians think about their finger pressure on every note etc? Of course not, they have trained in such a way that these movements are all subconscious. They think about the music and how they want it to sound, and their subconscious and muscle memory allows that to happen.
Experience, muscle memory/ hand to eye coordination, innate talent, great imagination, those are the secrets of the top players. Most of them are gifted with all of them, some have more of one than the others No shortcut exist to aquire any of those. Deal with it.