My suspicion is Nightengale is an old-school pro who realized he had to get into the rumor biz to keep up with the Morosis and Rosenthals of the world, but in doing so he plays a lot looser with his sourcing. At least with Heyman he is still pretty well-reported, and you can usually glean his agenda.
Also FWIW I don't think Nightengale ever published or tweeted that statement, it was someone else tweeting about something he said on the radio. A lot less accountablity there.
But as I just said in the other thread I still think the Phillies prefer Machado.
I do tend to think the Nats are out inasmuch as, there won't be a hometown discount, more like a, "you should have signed me when you had the chance so now you must pay." And the team is the taking the opposite tack, "you should have taken the $300 million (which was not really that high, supposedly super-deferred) and now you will take less."