A majority of those delegates are not there as Tinubu's entourage. At COP28 'delegates from governments, businesses and civil societies are the parties to the convention who represent various shades of opinions and push for various mitigating actions, and as such participating nations are expected to have delegates from various sectors.' Billionaires like Elumelu, Dangote, etc are in Dubai for COP28 and are there with their own entourage and of course self sponsored.
Many Nigerians think it's the government that's sponsoring all the 1,411 representatives. No, that's not the case as the president's entourage is just a cut of that number.
“COP28: PDP knocks Tinubu over 1411 entourage to Dubai amid hardship - Daily Post Nigeria”