Why the downvotes? Practically everyone who sells SEO services has a blog explaining what is SEO, how it works and why you should hire him. These blogs are SEO

Why the downvotes? Practically everyone who sells SEO services has a blog explaining what is SEO, how it works and why you should hire him. These blogs are SEO'd to the maximum of the owner's ability, of course. What I hate about these articles is that they are optimized for indexers, not humans: the explanations doesn't make much sense but they try to cram in all the relevant keywords. Interestingly, this works well also with humans in a short-attention-span mode: you would think the article is useful if you just skim through it. I have stopped reading anything mentioning SEO in the title so this may not be the case with the mentioned articles, but it is the explanation why I stopped reading them: the signal to noise ratio is pretty bad.