Not defending marathi people, (esp since I am one) but its hard to switch to another language when you know someone or a group speaks the same mother tongue as you.
Even though I work in the US and was born and raised here, when I see a Marathi person who's a friend, i have a hard time not talking to them in Marathi.
Anyway, I feel bad for Sushant, but now that there is a entire article on it, i hope that it gets easier on him.
Plus marathi isnt' that different from hindi, so he should catch on sooner or later.