Odia kids - speaking in Hindi doesn't make you sound any smarter

Im visiting Odisha after a while. I see a bad new trend - khaanti Odia folks responding in Hindi even even I start a conversation in Odia. This is more pronounced in the service sector (restaurant, malls, auto). I wonder why they do that. Does speaking in Hindi make you sound smarter? Or more urbane? Whatever the reason this trend needs to stop.