He hasn't invictus. And if he has, those voices in hid head convinced him its not. I'm a Christian, I can say it's a very happy religion, nothing as put in described it. Christmas especially is a very happy time as its the birth of Christ. I think he's making that assumption based on the fact that Christianity tells people to live in a way putin most likely disagrees, and tells that bad deeds with lead you to hell.
He is completely one sided and forgets about the repent part, the forgiveness part, loving your neighbour more than yourself, do onto others etc.
Also, as I have said earlier, putin considering as invictus said secular traditions such as reindeer etc being religious, just shows how retarded he is. He can consider Christianity anything ge wants really, but I suggest he should 1. Get informed, and 2. See people that are Christian, and how miserable they are. He is a pathetic waste of time.