From what I see, not all negative words are filtered. Those negatives that would seemingly contain a balanced article of the company's wrong-doing still exists. For instance, "Scam" is a word that a New York Times or other major media might use to write about wrong-doings. But "Sucks" or "Rip-off" they might not..
I still see "scam" as part of the suggestions, but not the other two..I think the point here is to provide balanced negative reports.