It is referring to something that could be called racist—it is not itself racist. Important distinction, imo.

It's not really meant to be about race specifically. It came to mind because of a technical talk by an Indian guy I watched on youtube once where everyone just made fun of his accent. For some reason it stuck with me.

You could say the same about someone with a strong southern US accent, or a thick Australian accent, or a working class English one.

I hear that pointing out racism is the only real racism.