> are those that are only hosting content for the ad views.

I might never blog/publish code again amidst all this. I never had ads on my sites. I am not alone in this.

Manuals don't always well explain how to use their products with everybody else's products because there are too many to do that. But there are lots of people trying things out and might figure out the fine details on how to make various things work. They then publish these how-to pieces (which exist no where else) to the internet, or at least they used to when there were incentives to do so.