But this isn't a story, literature, or a fancy piece of art; it's merely a technical blog post that discloses a security vulnerability. Here, the writing serves only as a vehicle to convey a message. Once you've received it, its purpose has been fulfilled. I would agree with you if the writing were an important part of the message, but here it is not. Not everybody can write well, and this guy clearly had something to tell, and that is what matters.