No.  It makes the article inherently biased.  Why isn't there a Praise section to go with your Criticism section?  Because it's a silly, arbitrary way to break up an article.  This is what you're fighting for: 

 * PETA 
 ** General info about PETA 
 *** History 
 *** Campaigns 
 *** Policies 
 *** Relationships 
 ** Why PETA sucks! 
 *** Criticism of campaigns 
 *** Criticism of policies 
 *** Criticism of relationships 

 This is what it should have: 

 * PETA 
 ** History 
 ** Campaigns 
 **: Criticism of campaigns 
 ** Policies 
 **: Criticism of policies 
 ** Relationships 
 **: Criticism of relationships 

 Which is a more logical way to break up an article?   Which is more neutral, emotionless, disinterested?   

 Also, your suspicion/statement is simply wrong. —