What rot. Tell that to native Americans who were forcibly converted and enslaved. Tell that to people in the inquisition. Tell that to peoples in India and the east that were forcibly converted so that the pope could fill his coffers. Tell that to all the children murdered in Christian and catholic schools.
Christianity and Catholicism doesn’t fool me. If you’ve ever wanted to see the mythical devil - look to those preaching and they legacy of hate that they carry.
There's really no argument against the institutional and historical hypocisy. There's no shortage of people and groups that have done or currently do horrible violence against others, sometimes even in the name of these ideas.
But I don't know if that takes away from the idea itself and what fruitful counterpoint it might play in modern discourse.
So your argument is that if some people who claim allegiance to an idea do evil things, that renders all who claim such allegiance, and even the idea itself, evil? That is a pretty poor argument. It's also one that I don't think you would actually accept in another context. I bet you anything that I can find some ideal you uphold which was espoused by some vile people at some point, and I also bet that you wouldn't go "ok, I guess I have to give that ideal up now".