Two problems with this take. One: a person who says they are Christian has to be accepted as such. There’s no way to refute this, and in the Bible this is even backed up. All a person has to do is accept Christ is the son of God. Two: you don’t get to decide who are the “real Christians” and the Bible tells you not to judge others. Also, the concept of repentance allows any sins to be forgiven, even murder. Bonus problem: you ignored all other points brought up in my article to defer to the idea of “true religion” which is itself part of the problem. Thanks.