Although, I’m not guilty of doing that, but I find several south Indian folks get offended by the use of the loose term - Madrasi - for them. Of course, they are not Tamilians, all of them, and want their Mallu, Kannada, et al identitites.
It’s not ignorance, but history. Under the British rule, for a long time, Madras Presidency included most of South India including parts of Andhra Pradesh, Orissa, and Karnataka. A reference to that people from that region, hence became Madrasi. It’s culturally intact since then.
I’m not defending the geographicaly or culturally challanged individuals, but attempting to save offence. This is not a flame. Stop the jokes, already.