The main difference is that the UN didn’t force anything and isn’t unilaterally deciding what projection to use. The countries decided together to use a new default when showing the world map, that’s it. You can still use whatever projection you want, nothing will happen to you.
> it's purely symbolic and changes nothing geopolitically.
That’s literally what the UN is for. The UN isn’t a supranational organization fixing conflicts. It’s a forum for countries to discuss and agree on things, in practice that means mostly symbolic decisions pass. Which is fine, symbols and defaults matter
>The UN isn’t a supranational organization fixing conflicts.
It kinda is, it also have powers to authorize invasions. Not that any of this works in practice, but that's what is for.
Trump didn't unilaterally decide what the rest of the world calls two bodies of water, only the US
> The UN isn’t a supranational organization fixing conflicts.
The UN's explicit purpose is to try and prevent conflict. One of the requirements to join is to renounce the right to use force in international relations except in self-defense.
They do that in a number of ways. One of those is to have these types of symbolic votes. The hope is that by having where everyone stands out in the open, whether on silly things or serious things, it will reduce conflict. Does it work? Sometimes yes, sometimes no.
Obviously world peace hasn't been achieved. It probably never will be. Nonetheless, that is the goal of the UN. They want to try to fix conflicts.