I'd suggest that with polarizing content such as this, reviews should stick to the technical — design, usability, structure, SEO, and so forth, and should only touch content as far as things like spelling and grammar are concerned. That goes for less provocative sites as well. These review threads should never devolve into political or religious flame wars (not even at the tabs-vs-spaces level), even when there are wildly differing opinions on things like design and markup.