tl;dr Writing blog posts and writing stories are comparing apples to oranges.
Just because story-writing has a lot more description does not mean that those words aren't necessary. For example, for Hamlet to simply say "I am conflicted about my current situation and am contemplating suicide", does not nearly give the same nuance or insight into what his thought process is as "To be, or not to be, that is the question:/Whether 'tis Nobler in the mind to suffer/The Slings and Arrows of outrageous Fortune,/Or to take Arms against a Sea of troubles,/And by opposing end them: to die, to sleep".
tl;dr the goal of most forms of writing is to convey a message with just the right amount of words
So really the title "Write less" is the misleading part. Write more, not less. Just remember that good writing, like good code, requires iteration and refactoring.
Taking writing advice from someone who doesn't know how to use commas is like taking cooking advice from someone who doesn't know how to boil an egg.
> The less words you use
>Fewer words
I am hardly a disciple of it, but most writing guides encourage brevity, and the notion that writing is easy, while editing is hard. Every word added should add more than just length to the work. Okay, I could remove that second sentence. And the third. And..