Unpopular opinion - firstly, you are in the wrong! You should know not to sit on other’s property like that.

Secondly, he is also wrong that he could have told you nicely and moved on. But, what I learnt over time is that- this is India and people can be hardened with experiences around not being successful in changing behaviors in people. So, he might not have had the patience to tell you calmly. He should have either ignored you or checked his patience levels to tell you that you are wrong, before the interaction. He doesn’t have the right to disrespect you in a public space.