When Namor was announced for the Marvel Cinematic Universe in Black Panther: Wakanda Forever, fans were intrigued by the changes made to the lore. Marvel Studios moved from a white Namor and Atlantis to a Latine-inspired Talocan kingdom underwater. It infused more culture, equality and diversity to the powerful oceanic nation.
Source:https://www.cbr.com/namor-mcu-redemption-tweak/