Many people use that argument to be mean and hurtful to people they disapprove of. In the end that behavior most often does more to damage a situation than to help. Kind and respectful does not mean approving their behavior. Nor does it mean you can’t defend yourself if attacked.
Jesus died for their sins as well as yours & mine.
Are you kind and respectful to, say, Charles Manson? No. You treat him humanely. You do not return evil for evil. But neither are you a sweetie pie to evil. It is VITALLY important that however you treat a person doing wrong, you do not treat them in a way that aids and abets their evil.
When did christianity become so girly? We must hate evil. Returning good for evil does not mean we are lovey-dovey kissy-kissy. But the leaders these days are incapable of making a strong stand against the evil of homosex. It is evil. It is perverse. It is corrupt. And it, as a movement, has targeted our children.
...and just because an argument can be perverted by those who want to do evil, does not mean the argument is wrong.