Well, this is certainly not true with every Fox host.
Greta and Hannity both slobber over Trump. On weekdays at 7 PM EST and 10 PM EST, you can expect a Trump love fest from both of those Fox hosts. He is not going to get better coverage anywhere else than from Greta or Hannity - which is why a Trump war with Fox is completely counterproductive for him (since he knows Greta and Sean will ultimately defend their co-worker Megyn and any others if it really comes right down to it).
I was talking about Pundits/Panels.....NOT hosts.