You'd like to see a willingness to engage. "You are all dumb" never was a good argument, you get many more points for "Dogma X is outrageous".

You can make fun of the anti-homosexual tendencies of evangelicals as much as you like and they'll just reply that queers are gross and the bible says it. But if you point out that the prohibition of homosexuality appears in the context of cultic practices you meet them on their own ground and imply that they don't understand their own foundational text.

Funnily enough, I've seen similar arguments to "proof by mortification" in apologetics around historical Jesus - basically, if you were going to invent a Messiah, you wouldn't do it like this e.g., the first witnesses to the resurrection being women, in a very patriarchal world.