Various sources are pointing out that Twitter files show the executives who run Fox News had their doubts about Trump's claim of a stolen 2020 election. In spite of which they allowed those who held such views to continue to tout them on air.
Legacy media types are upset because the Fox leadership made that decision based on their understanding of their viewers' desire to hear those views advocated. Where is the analogous outrage at the leadership at MSNBC and CNN continuing to put Russia collusion narrative on air when it was clear to most that the whole thing was a Clinton campaign disinformation plot?
It is the same sort of decision, catering to the prejudices of your audience. It is no mistake that the news programs are referred to as "shows." Live with it.
TV news is show business hiding its uglies behind a fig leaf labeled "journalism" hence audience tastes are an issue. Similar decisions are made daily at major newspapers, choosing what stories to cover, which aspects to emphasize, and in what detail.