How is “certain other sources of news and opinion are engaging in a program of misleading and manipulating the public discourse about an important topic” not news?! News media should expose when businesses and government officials are cheating organizations and individuals of their money, but be silent when the lies and fraud don’t have a concrete price tag? 
We all have our opinions, on immigration and other matters of public policy. But there’s only one reality, and some things are a matter of fact rather than opinion. For instance, we can’t properly debate what to do about climate change when millions believe it doesn’t exist. The role of media used to be, and many would say is supposed to be, to give us a common set of facts that is hopefully as close to the truth as fallible human beings can get.