Are you sure? He's been checked.
If he is, and he is a Dalit, or a tribal, he has every right to be angry. You can see how the Savarna are reacting to him.
Muslim Indian? Cannot be ruled out.
It is a practice that is deprecated, and duplicate handles are generally warned, if that doesn't work, deleted altogether, meaning permanently banned.
@Musings
I'm sure
@Lulldapull is wrong, but this notion, that
@chinasun is some Indian's duplicate handle, either a Dalit or a Muslim Indian, is floating around.