Yeah same, feels oddly reducing and they never give a very good reason for it, such as them coming from an area where the majority is dark skinned or light skinned, most of them do not put the effort into giving them a more particular trait that would make that justified. I'd love to see both because then it would be more accurate to reality and also opens the door for fun designs. It's not like we also don't have multiple japanese-brazilian or chinese-brazilian individuals. Mentioning those two in special because it's the majority I see.
I did happen to see a clip from an anime called "Na Nare Hana Nare" with a blonde brazilian girl that gives cheek kisses that are oddly gay... hand on face and all.
Agreed on that, coming from USamericans that is more than expected when they won't even bother to learn the difference between Spanish and Portuguese, I've had people try to correct me when I said it was Portuguese and not Spanish in online spaces. Brazil for them is big butts, football (s*ccer), The Amazon, Rio de Janeiro and nothing more. It's why I don't read them at all (Also because of the art style most of them have, which I find ugly and I'd rather not give much attention to media from there).