You hindsight hammer wieldin sumbishes.
I suspect the Rams were considering Dart and the Giants didn't trust them, which is why they moved in front of the Rams to take him. Now some will point out the Giants had a "deal" in principle with the Rams, but that doesn't mean the Rams can't say they've had a change of heart when the pick is up and the player they want is there. Also it was rumored I think IIRC that the deal they found was cheaper, but if they're calling around for an earlier pick it might indicate the Giants didn't trust the Rams for a player they were hell bent on getting.
Either way I must concede that QB wasn't a big enough priority for the Rams for this season to where they felt it necessary to jump for any of them. That does make sense as well, since QB doesn't help us make a title run this year. And of course the trade offer from Atlanta was the type you cannot refuse. We'll never know for sure, since McVay and Snead are not going to let their real thoughts on these matters out. But I suspect the plan was they had two or three QBs slotted at two or three spots and none of them made it to those spots.
So I don't think Jourdan was wrong. Rams probably told her the truth. They just weren't willing to position for the QBs they liked.