I think so thats not right we respect their religion, we say happy holidays to them we are happy with them so they shouldn’t mind that.They respect our religion so much most of people know we don’t celebrate Christmas so they say happy holidays to us they are better than us ,atleast they know what to say.On the other hands we are dying to merge in their religion our great inferiority complexes
I don’t do maatam in muharram so I don’t know but atleast what I can do is that I don’t go and start preaching that they are doing wrong.(imaan kaa kamzor tareen darja)