The point is to surface human websites and discriminate against content mills, click funnels and e-commerce.

For one I have a sort of budget for how much javascript I will tolerate. Some is fine, like your standard wordpress config probably will fly, but not much more. I also do a personalized pagerank biased toward the blogosphere. The likelihood your website shows up in the results is directly determined by whether real humans link to the website.

It's not a Google replacement by any measure, it's meant as a complement, but if you are looking for more in-depth content on a topic than you can find elsewhere, it's often a good starting point.