FNC, like the Republican party, has lost massive amounts of credibility. They were both hit with the same IED: Donald Trump. Like the Republican party, they have a lot of rebuilding to do. I'm not sure if they can pull it off, but there's some good raw talent there. If Megyn and/or Bret Baier leave, I'm gone.
BTW, I'm not optimistic that the Republican party will be able to recover. I think it's probably done for.