What do you mean by "begin with the premise that the world is going to hell"? Can you name a person who does that? In the context of this particular blog post I

What do you mean by "begin with the premise that the world is going to hell"? Can you name a person who does that? In the context of this particular blog post I think the authors argue quite coherently in favor of their perspective, whether you think it right or not, it's hardly "beginning from the premise".