He never trashed trump. Go read the letter yourself instead of letting MSM interpret it for you.
No, there's nowhere in the letter where he trashes Trump. He simply says there will be someone better aligned to trump's views to be secretary of defence. If he wanted to outright trash trump he would have all the support in the world from the MSM, comey, the clintons, obamas and all the rest. He's not a pussy. He would just say what's on his mind. He crafted the letter so it would be interpreted by the media in exactly the way you say.
It's simple. However the media is spinning it, isn't the truth.
Good. Fox is mostly shit and the normies are realizing this. Its not that more people are watching MSN, it's that people are turning of MSM including fox