My guess is that millions watch who are not particularly politically attuned, and aren't focusing on the show's political bias. Also, Today tends to attract the best "gets" - the people making the news.
In any case, since the fact remains that Today is an important source of news and views for millions of Americans, I believe it's worthwhile to keep track of what they're up to.
And we Freepers who are either cubicle-bound or who can't bear to watch the terminally perky Al-Qaety, are grateful to you.