You say "As a current iPhone SE user... Lack of headphone jack is still unacceptable"

But you're a current user... so clearly you accepted it. And as long as you do (accept it, keep buying phones without headphone jacks) why would anyone change? The message you are sending (in the only way they care about $$$) is that you do in fact accept phones without headphone jacks.

Just reading what you're writing...