I am not preventing anyone from posting, but I have as much right to post as they do. How a debate works is people post and counter post.
It is unsesecary, if you want, make a thread for comments and constructive posts about profiles and people will have the option of copying and pasting them on if they like them. That way what you want is still done and doesn't require changing anything and eleminates the possiblity of profile spamming and bashing.