I suppose I feel that some of his basic points do apply across the wiki, when applied to articles that have been taken into ownership. A recent rather disturbing case made some waves in Conservative (British Conservative, that is) newspapers and magazines. One editor had been systematically pruning criticism from a political columnist's biography and inserting denigration into the biographies of those who had criticised him.
It would be unwise to deny that our editing system makes us vulnerable to such bad actors. I have no reason to believe that there is a particular bias to the resulting drift, but if there were it might arise from the demographics of the project making it harder to prevail malicious or otherwise biased editing on some articles rather than others.