I agree asking about a cultural difference is fine, and I also think there's a way to do it, and that the top-level comment was way wide of that mark: it doesn't read like someone that wants to learn about a culture to me, it reads like someone glad of an opportunity to have a go.
Perhaps you're just hyper sensitive. I'm really just curious why I see these stories posted by Indian people frequently, but far less frequently by, say, Chinese people. Maybe it's just because Indians can more easily be part of the Anglo-web that I'm a part of versus Chinese people.
This doesn't prove anything, but I'm married to an Indian person. My child is half Indian. I am not just "having a go". I'm just curious. You need to chill with the assumption that anything you read that is genuine curiosity is racism because of "phrasing".