Tbh I seem to find roughly the same sort of comments in all the other other news outlet - bbc, daily mail, guardian. I think this is because the type of people who actually bother creating an account to leave or rate a comment are those who want their opinions heard, so they'll go over to other news websites/forums as well. However there are obviously small variations between them depending on how strict they moderate the comments section - this is what I think it ultimately comes down to.