Why the fake Christians are no better than child predators

I didn't really get around to specifically mentioning it but when people who call themselves "Christian" are going to disown and demonize anyone strictly based off one sin, it makes those "Christians" no better people than those that are attacking children. Nobody has been able to explain to me why condemning a gay person is acceptable but condemning drinking, smoking, junk food, swearing, ect is not acceptable.....