Sir, you just said kurta is being weared during religious ceremonies… It’s hard argue that it is not a religious dress…

Well if that yellow thing becomes widely acknowledged as a “religious display” then yes, it will be banned in public schools… It does sound dumb but only because you made an extravagant decision to make “yellow” a religious sign. If you claimed “let’s have a crossed bar” as religious sign, suddenly it becomes easier to imagine