There is a difference between sunny beaches looking goofy cartoony, and just having a beautiful beach setting.
Larian does not know how to create a nice looking setting, everything has to be cartoony and over the top.
Just look at the number of colors in screen in BG3 demo - open areas. There are literary at least +20 colors on the screen the whole time, with high contrasts.
Original BG was much more toned down in its color palete.