Earlier quoted context omitted.
Of all people, I wouldn't quote Foucault to make sense out of anything .
Why?
This means poststructuralist texts can be extremely hard to read and understand, especially to non-philosophically trained people or those hoping to get a logical theory about the world instead of a multi-facetted view onto some phenomenom within it. That doesn't mean you cannot pull a lot of interesting stuff from those texts, it just means it is very hard and never clearcut. Critics and people who failed to parse such a book dislike poststructuralists for this.
Focoult however wasn't a typical poststructuralist anyways and many of his books are very well observed and describe power relationships within society on the base of some other phenomena. As any philosopher with a precise language his books stand and fall with the quality of translation. I liked the German translations better than the English ones, because English as a language doesn't really lend itself to auch thinking..