I too am suspicious of "ten things" lists, but that's probably what was asked for, and a good writer follows their brief.
By and large, I think these are more helpful than they are unhelpful, and, given how much advice can vary in usefulness for different people, I think that's the standard by which they have to be judged. There's nothing in there that stands out as being utterly wrong, and the writer deserves credit for giving the advice straight and not trying to be amusing, as often happens.
Also, I think these rules might be better for writers just starting out than people who are used to writing long manuscripts. In particular, I do think about genre when I write, if only to the extent that I'd like a potential purchaser to be able to say "It's like that".