
In this context it’s very stereotypical. It’s not the most racist thing but it’s still pretty offensive. They did not have to draw those costumes on them and put a damn sombrero just for her to play the maracas. It just insinuates that it’s ok to dress like that when it’s not. I’ll give another example. Imagine she found like a cool wooden bow and arrow and all of a sudden the next picture you see is her dressed up as a stereotypical Native America to “put on a show”. It’s just kinda like wtf? That wasn’t necessary and def racist.

This might not go down well, but...just to give context: cultural appropriation as a concept isn't something that's a thing in Japan. It isn't considered or understood as offensive and vice versa, especially when not done with malicious intent in mind.
For example, Japanese people aren't gonna be offended if you wore kimonos and posed with Hello Kitty ears or something. As long as you aren't doing anything blatantly offensive like portraying something obscene in said outfits, or wrote something actually offensive. Racism isn't understood universally, and especially not on a bubble island.

If you think the stereotype is offensive try being born as a middle eastern and reading all those arabian / gulf inspired yaois and isekais. Japanese mangas like to use them setting but NEVER get anything accurate. Well, to them it's just "fiction" and they never claim it as something negative either so there's that.
Damn didn’t think I was gonna see something stereotypical and racist about Mexicans sigh… welp let’s hope it doesn’t happen again