If I can just say one thing...I'm a white Brazilian. Born in Brazil, moved to Canada when I was younger and now hold dual-citizenship for both. Before I say anything, let me say that I completely understand why people want darker skinned characters in fiction. That's perfectly understandable and there really, really aren't enough characters like that around.
So I'm perfectly aware that what I'm about to say is mostly emotional and not at all something that I think "needs to change" or whatever. If anything, it's just me going "Man, I feel like this, but I get my feelings aren't really that relevant in comparison here, so I'm just venting but accept this is how it has to be."
When I see people complaining that Brazilian characters aren't black enough, my instant reaction is kind of going...man, I was happy about this character with a similar background to me, but now that I see people complaining that the character is a problem for looking like that, it's just kind of...deflating? Eh. Like there's this implication that I should be satisfied with white American characters because hey, that's close enough to me. I don't know. Maybe they are. Either way I can't exactly say I got it worse than actual minorities, I can pass for white easily enough around here.
At the same time...not sure if I'm making sense here, but it's just a bunch of conflicting feelings here like, I'm happy about a character that's similar to me, then I see a bunch of people going "Oh, she shouldn't look like that" and it's...okay let me just say that I have had a lot of people respond to me explaining my background by going "Wait, but you are not black." And that's just a bit annoying sometimes, yeah? Like this implicit thing about people like me not mattering because our problems are not important enough.
And thing is, I actually get that. Discrimination wise people like me have it pretty good. As long as we hide our accent we are pretty much golden. So I can't complain about people brushing aside desires for representation and going "Well, other people have got more problems than you, so I'd have preferred if we took care of that instead." Like, I get that and I even agree with it in a logical sense. But it's still a bit deflating to go from being pleased that something that kind of bugs you being sorta addressed to kinda down that people are saying they should have ignored that in favour of something else, you know?
And again, don't get me wrong--I perfectly understand why people are saying they wish she wasn't the way she looked like and why that would have been better. I'm not even saying I disagree with that response or saying that white Brazilians are a group in need of representation or anything like that. Just that seeing characters physically like me is kinda a nice feeling and my irrational emotional response to reactions like in this thread is to kinda be deflated and be like "Yeah, you're right. That would be for the best I guess. Ehhhhhhh..."
Okay I'm done, sorry for rambling haha.