Earlier quoted context omitted.
Like cults? Claiming religious authority to abuse someone is a crime basically everywhere. If you're trying to refer to Muhammad, calling a few lines about a political marriage not contained in the Qur'an "promoting that viewpoint" is assholish behavior. If there's some other target or just a hypothetical, it would depend on how the religion viewed the section today.
You are really about to start splitting hairs here I feel, but let's do this. If a religion today promoted that a 50 year old can marry a 9 year old, would you ban it or not? If a religion today claimed that the rapist of a woman who was single was forced to marry said woman, would you ban it or not?
Despite your attempts to provoke me, my answer to every question has been "it's fine" except for the clear cut case of abuse. Now you're continuing towards what I view as islamophobia even after my warning. I really don't understand what you're hoping for here.
Child abuse, rape, and forced marriage are all things that should be illegal. Claiming a law is wrong shouldn't be illegal, but if the church was actively pushing their members to commit crimes they would likely be accessories. At no point would I ban a religion.