I'm not getting into the argument that you are having with others.
I'm interested in your reasoning though.
Some people will tell you Pele is the GOAT.
Some people will say Maradona is the GOAT
A lot of people in the present day, including me, will tell you Messi is the GOAT.
By your reckoning it's only a matter of decades before these three will be overtaken. You haven't mentioned skill, it's just basically the march of time, people will be fitter and stronger etc.
I just disagree in principle. I reckon if you were a wizard of the dribble a'la Alan Morton playing with a ball that weighed a tonne, and could put pinpoint passes onto the heads of strikers, whilst playing in mining boots. Then how good would they be with today's equipment and footwear, for instance?
Going by your rationale again, why has no golfer eclipsed Jack Micklaus' Majors record yet?
I'm not really arging with you, I just happen to think class from 100 years ago, would be class in the present day.