Natural crap results

Google's natural search results are making disappointment lots of site owners in those days because after completion of BigDaddy update any one see:

- Search results are not constant yet.
- Search results are showing full of off topic rubbish such as wrong page from an authority site or just the home page of a site that has a relevant sub page means crap sites in top SERPs.

Any reason why Google search results are not steady and relevant?

Yesterday I read an article and according to this article "Google is trying to make profit through irrelevance". Personally I agree with this article a lot and feel that "what we are searching is not the truth but truth is that we are bound to see what they showing us."

Mind sharing the article with us?