Why do you say that?

I agree. I think ansible is great in principle, but the documentation is severely lacking. Like it'll tell you to set a value, but not whether it's supposed to be in yaml, environment, or something else. And if it's in yaml, it doesn't tell you the required context to make it valid. But when someone has taken all the documentation, all the tutorials, the articles, the example code, working code, and stack overflow answers and put them all into a blender, often a useful answer comes out.