There is a difference between "happy talk" comments like you stated and Ritter's snarky side comments which delve into outright stating his opinion.
Yes but again, Beutel's segment was identified as commentary, evidenced by signature below the screen (I would have still opted for a clear editorial graphic). Some of his opinions weren't even direct, just generic wise sentiments such as below:
Wether or not the ratings are affected, it's the principle if it. News is supposed to be straight fact and repoters must minimize their opinions as much as possible unless it's an editorial or analysis segment. Cable news teaches us what happens when too much opinionated content seeps into news.
Alex S. Jones of Neiman Reports (not THAT Alex Jones) had a good take on this: "Enemies of objectivity argue that because journalists must be free of bias to be objective, and because this is impossible, it follows that objectivity is a false ideal...But objectivity does not require that journalists be blank slates free of bias. In fact, objectivity is necessary precisely because they are biased".
In short, because we are all biased we need a source of outright fact, which in turn helps us create informed opinions.