Why? Because it makes the false assumption that the person who wrote a flawed story also wrote every other story in the newspaper, which is both untrue and impossible. It presumes that because someone underqualified was interviewed in one article that every person interviewed in the rest of the paper was also underqualified. Again, untrue.
Worse, it doesn't understand that the editorial section is not the international section is not the comics section is not the classified ads.
It's perfectly reasonable to start each new story you read in a newspaper with a bit of amnesia. It was written by a different person in a different place in a different time. Just like if I buy a crappy video game in Target, that doesn't mean that every single video game in Target is crap.