I get your point, but in what way are these things really necessary? I guess in the sense there's a social obligation behind it, but such a rule here just feels forced an inappropriate. Out of place at best and a burden at worst.
I just don't think such a statement should be there out of obligation even when it makes no sense. If somethings being included purely out of such obligations, all I can think is grow a little back bone.
At the least, these rules could do with being more precise on whats allowed. "and there has been some REALLY dark stuff", do you have any examples of what kinds of things you mean? ( I don't need you to find links or anything, I'm just curious what kind of content this includes).