Newsie Talkshow Hosts already know what these names are going to say, so they are relatively ‘safe’ in having them on week after week after week after week.
These Sunday morning shows have a nearly constant set of viewers, which satisfied the main office need to fill the timeslots and appear to be newsie-relevant.
...which qualifies either as an all-time epic Facepalm moment or simply muttering “Same ****, different day”.
(Was I seeing things, or did the list include Bawney Frank? If so, you can add “WTF?????” to the list above....)