The comment is most likely correct, at least that’s what I see, and here’s why:
America is populated by the product of a public, socialist school system. As my tagline says: The average American: Uninformed, and unconcerned.
So most Americans don’t even watch cable news. Those that are interested, and want to be informed, rather than indoctrinated, watch Fox. The lemmings who want talking points to try to talk to informed people who watch Fox, watch CNNABCNBCCBSMSNBC.
If you are in a casual conversation, and bring up something came from Fox, many people will shoot you a look like you just quoted Weekly World News.
You are right. You have Fox News watchers, then you have everybody else, divided among all other news sources. That’s the only reason their individual numbers are smaller than Fox’s. There are more of them.