Your argument is, "Don't say 'I believe X and if you disagree with me you're bad'. Just say, 'I believe X.'"

But then literally in the same sentence, you say, "If you do the thing I don't like (in this case, calling people bigots because they don't support lgbtq) *then you are self-aggrandizing."

"Nobody should be called a bigot for their views on lgbtq, but it's virtuous to call people self-aggrandizing for calling people bigots."

Either name-calling is okay or it's not. You can't have it both ways.