I'm not humor impaired and I really do get the irony intended by applying the term "Amish" to these feral thugs. But, as an older guy who doesn't mince words and avoids coded language (or euphemisms), I find the use of "Amish" in this context as misleading as the sodomites who call their filthy, deviant lifestyle "gay".
Roger that. Kind of like calling a............ Never mind. LOL! You know where I was going. No euphenisms needed. I remember when gay was happy and joyful.