I think you have it,
So, the Christian faiths either need to update their doctrine to reflect modern values, or they need to educate their followers as to where they’re going wrong.
I think we would have more faith in the integrity of churches if they did the latter, even if it went against our own views, rather than change their teachings to ingratiate themselves with the masses (npi)
History would suggest that the latter is more likely to happen. I’d really like it if this weren’t the case, which is why we atheists keep raising it as a topic of discussion.