TV news...the cable news channels, and the evening news on the major networks...is more designed to improve the stations "Neilsen Ratings", than actually presenting the news. An average 30 minute broadcast consists of at least 12 minutes of commercials. TV news is a huge revenue generator for these TV stations, and the more sensationalized it can become, and the more it can hold the audiences attention, the better....for the TV "corporation". If a person really wants to know the details and facts, they must devote some quality time to researching multiple sources...generally via the Internet. Political related news, especially, is heavily biased towards the views of the corporate ownership and management. If you review a report about an event on Fox News...then look at the same subject on MSNBC....for example, you often get substantially different viewpoints....and the Truth probably lies somewhere in the middle.
The overuse of these "hackneyed" phrases is simply a reflection of the TV stations inability to accurately research and present the pertinent facts.