Southern rock and turbans don't mix(neither does southern rock and Scotsmen for that matter). Southern rock in and of itself... I don't mean to call the southern US racist but I don't think I have to explain to most people that it's not the most welcoming place when it comes to foreigners. I think that's where Jinder sticks out.
Plus... and I don't claim to know a lot about Indian culture, but isn't the turban a requirement if you're going to wear one? We've seen Jinder take it off to wrestle(which obviously is kind of required for that activity), but if he can take it on and off at whim why is he wearing one outside the ring, especially with this gimmick? He still wouldn't fit right into a southern rock group but at least it would be a better fit in terms of appearance.
EDIT: I'm more inclined to believe that it's simply for comedic value. 3MB are ridiculous by nature, the turban just adds to that.