I think we need to distinguish the race for the most GS from the more tedious GOAT discussion.
It is very clear, and even Medvedev said that in the presentation, the players only really care about the GS race.
Federer, Nadal and Djokovic aren’t going to be sitting around a fire 20 years from now arguing about who had the most YE #1s, or the most consecutive weeks at #1, or the Olympics Gold, or best H2H, or the best H2H at Grand Slams, or the biggest fan following.
That’s for the nutter fan bases to keep arguing to eternity. With their kind of records, it is an argument for who can use selection bias better.