Indian English is not the same as American English. As I understand it, "backwards" means "disadvantaged" in this context. Perhaps you should prepone learning about English dialects.
And OBC is Indian English, which is one of the most common varieties of English spoken worldwide. I think it's really weird when people say "carpetbagger" in American politics, definitely more weird than OBC. And don't get me started on the racist origins of "grandfathered in" or "eenie meenie miney moe".
Indian English has, by number of speakers, more of a claim to be standard English than British English.