About Raghav insulting Kalpi just to make her strong is definitely not worth if it had happen in real. The way I see it is that CVs has given his character a grey shade, mean, self-centered personality. So if he were to be shown being nice to her and doing what she was asking him to do wouldn't have suit well with his character. Even though he isn't like that in real from his heart as his life took some dramatic twists which made his character to look this way. He never has opened himself to anyone before except Sammy. So for him to be nice to Kalpi and make her understand about struggles of life would be just out of character. But trust me if that were to happen to me in real world, then I wouldn't have let that guy to talk to me like this ever again. So I kind of understood where Kalpi is standing. But again if we just talk about his character and his behavior then he has his own logical justifications.
But I am impressed by the creatives. They are really putting their hardwork in to slowly changing the Raghav Singhanha into just simple Raghav. It doesn't look odd or awkward but it's rather looking progressive.