I have suspicions about Kellyanne Conway’s husband. He’s a neverTrumper who hates our POTUS’ guts. Would HE perpetrate such an “anonymous” letter and stab the POTUS in the back?
I don’t think the NYT would allow him to represent himself as a “senior govt official”.
There is a reasonable chance that this would come out sooner or later (like Watergate Deep Throat) and the NYT would be tainted forever if this was a complete fabrication.
Mind you, Trump Derangement Syndrome has caused some previously reasonable people to go off the deep end.
But there are multiple people at the NYT who know about this. They are liberal and hate Trump, but they also have an institution to protect - the institution gives them their status