This is kinda the same reason why say Yasuo and Jhin both got High Noon skin despite not being "western" champions. How many champs got Blood Moon despite them not being "eastern". Or how say why Poppy has a Noxus skin.
It's not like Riot doesn't know which champ is a stereotype of which real world or fictional region, they know that, they just switch things around to get some spices rolling.
Like, skins by its premise, do not have to adhere to the champs base design. That's kinda what skins are for, to experiment different iteration of the champion's aesthetic appearance in different themes.