I'd say there's a lot of things, including what you mentioned, that cause leftists, and others, to hate Christianity. For instance, the Christian view of the nature of man is anathema to many.
You’re right, of course. There are many reasons. But I think the Rights of Man stem from the nature of man as viewed by Christians.
For instance, the Christian view of the nature of man is anathema to many.
They can not stand the idea of original sin. They will not admit that humans are fundamentally flawed. The basic premise of the leftist state is that man can be perfected with the application of the right state policies.