I agree with you! Certainly there are certain things we shouldn’t use:
I am South Asian and am fine with OP wanting to use a kurta in their story (tbh I knew the name right away when I saw their outfit design)
while I’m OK with this, there are certain things I wouldn’t be OK with. For example if they had an update with Sikh temples, I would not be OK with people using their characters in these backgrounds, wearing shoes and no headcoverings because it is considered disrespectful even if it is fictional.