Media acts like it believes the unverified false allegations contained in Steele dossier
I think the main reason they believe it is because they have such animus toward the President that they see it as the best way to displace him. They can't possibly believe that it has been proved accurate in substantive regard. Even its author will not say that.
Media Gaslighting Can’t Hide Fact Trump Campaign Was Spied On
After a year of alarming revelations, the media are still more interested in proving the Trump campaign treasonously colluded with Russia than wrestling with the fact that the FBI spied on a presidential campaign.