Going back to the idea that "square 1=humanocentric settings" we do need to explore why those settings were humanocentric? I mean, the argument is that a setting which doesn't put humans at the pinacle will automatically put them at the bottom, so, why are humans the go to race in Greyhawk, Forgotten Realms and Dragonlance, the first three D&D settings for AD&D?
Well, again, these settings were based on the PHB. It's pretty easy to have a humanocentric setting when all the demi-humans are limited to very small selections of classes and even when they can be a class, they are limited to (more or less) single digit levels. It becomes pretty easy to posit a setting where humans dominate when every single arch-mage, high priest and grand druid can only be human. The highest level non-human priest is limited to 8th and the highest level non-human MU is limited to 11th. IOW, no non-human can EVER craft a magic item. No non-human priest can ever raise the dead. The only non-human grand druid is a half-elf.
It becomes really easy to think of how the setting is going to be humanocentric under those rules.
But, 2024 D&D doesn't have those restrictions. And it shows and has been showing since 3e removed all those restrictions. When you start reading older setting material, you can see example after example that don't make a lot of sense with 3e onwards mechanics in place but make perfect sense in AD&D.
Which is why we should have a 2024 D&D setting. One that's built from the ground up incorporating the assumptions of the rules. If that means that humans get pushed off to the side, then so be it. Maybe humans fit into the setting as the diplomatic species. They are the go betweens between various stronger powers. Maybe the human nations focus on trading instead of colonization. I dunno. Whatever floats your boat. But, as it stands, the older settings make less and less sense as time moves on because the assumptions that were made going into designing those settings don't make any sense anymore.