Are you saying Johnson hasn’t had dirt on him published?
Michael Howard, IDS, William Hague, John Major, the list goes on.... they were all hounded by the media for one reason or another. The media will bash any politician that appears deserving of a bashing, regardless of party.
It’s nonsense to suggest Corbyn was given a hard time because he was Labour leader. He was given a hard time for being utterly incompetent, and rightly so.