Suppose you are a person who falls into one of these categories; particularly, suppose you are a person who primarily experiences same-sex attraction. Perhaps you have tried to change that and failed. Perhaps you still have some apprehension that there is a God, and wonder what, if any, relationship with that God you might have.
This message does not offer you hope. It does not offer you a way into that relationship. It does not reassure you that you are God's good creation, loved and cherished, and that God's arms are always open to you; that God desires to lavish grace upon you.
Rather, it pushes you away from God in despair. You are worthy of hell. Heaven is shut to you, because of something you didn't choose and can't control.
Of course that message is harmful. It's not good news; it's a perversion of good news, a lie with a grain of truth, but one which tells people that the community of faith is not for them. That they are not welcome, not wanted.
This message promotes anxiety and depression. It is linked with high rates of suicide. It has been a huge part of why many people - not just same-sex attracted people, but their families and friends and those who see the damage done to them - no longer find the church credible or a place to seek authentic relationship with God.
It's not just undiplomatic. It does not put matters in their proper perspective; God's love and grace first, as the context in which any sin might be dealt with.