And if the person calling on that name also claims that "his" Christ is a spaceman from the planet Kolob?
Your logic makes about as much sense as saying that if a woman marries a man named, say, John Q. Johnson, that she thus agrees to have conjugal relations with John Q. Johnson, and so any guy named John Q. Johnson then has the right to sleep with her.
Their "Christ" is a "Christ" in name, only!
Regards,
When I stayed at an AirBNB run by a guy who played football at BYU, his Wifi was named Kolob
Not trying to convince anyone, just reading the words as written.