Amazing. Just like a friend of mine said, "I hate Fox News". My reply was "Have you watched Fox News?" Her reply, "Never".
You can see a lot of Fox News without watching Fox News.
Hours and hours and hours is played and reported on on commentary shows, books, mediamaters.org, liberal magazines and more.
I've probably seen over a hundred Bill O'Reilly segments without ever picking his show - not to mention chapters on him by writers such as Al Franken.
There have been times he's been unavoidable in public settings.
Ironically, the criticis of Fox News who 'don't watch it' might be a lot more informed about it than the loyal viewers.
Critics might be aware of the history - of Roger Ailes' rise to fame by impressing Richard Nixon with his 'tv savvy' and being his media advisor, paving the way to his involvement in how to use media for 'the conservative cause', leading to his failed attempt to create a right-wing network (people didn't watch much) and then the second successful attempt, when Rupert Murdoch saw a business opportunity - he could 'create a market' for his news product by having it tell its viewers that all the other news outlets were lying to them, so they could only trust him (sort of like cult leaders). Murdoch for the first time in cable history paid the cable companies to carry his channel instead of the other way around.
That sort of 'force fed' availability helped the channel to build a market where others did not have those resources and rest is history.
History such as the Fox executives being caught sending out political orders and talking points daily, a book by and citing several former Fox broadcasters exposing a lot the network did, their role in things like burying a story on the harm of 'cow growth hormone' and firing the reporters when they refused to kill it, the phone hacking details from England... the role of Murdoch getting British Prime Ministers elected who then gave him exceptions to laws limiting media ownership...
Critics might be informed of these things, how many loyal Fox viewers are?
I don't mind the point you're trying to make - ignrant attacks are not helpful - but I am pointing out you might not be correct in an assumption.