Both. Texts like the Bible tell you how to conduct slavery, endorses violence against men who have gay sex, and in no uncertain terms (and in many different ways) tells you women are worth a fraction of men and shouldn't be trusted to preach.

Yet there are things that aren't endorsed in the Bible are far too commonly preached by Christians. Like being against trans people, opposing abortion rights (in fact the Bible tells you how to induce an abortion and that you should do it if your wife cheats on you)... and like you said, some drum up donations for the express purpose of leveraging control over others, or to buy private jets, in spite of the life Jesus led and in spite of his teachings.

I agree with you. Using religion to manipulate people for political reasons is not really a religion problem. If you eradicate religion, there are many other levers to pull. In fact, manipulating religious groups these days also requires using these other weaknesses against people and then convincing them to ignore the conflict with their religious teachings.