That sounds like hot garbage considering Mark Dodge has all all locked in with old pricing.
It is possible that Mark dodge moves enough volume they don't have to worry as much about losing some money. There is still profit to the dealers at the invoice price.
He said all his orders in the system have already seen the $2800 price increase, it is possible Mark see's that and either hasn't shared it or is willing to eat that to keep their volume up. I am waiting to see what happens when people start taking delivery.
My guy did state that in previous years the invoice would reflect the original price. Also possible Mark is counting on that. I assume they don't want to ruffle feathers and have people consider going elsewhere before theirs is done being built.
IMO they can say anything, but it is meaningless till you get to the final day and see the final bill. It has happened to me in the past on other automotive matters. I once had a bunch of work done, came to get the bill and got a small price increase. Salesmen showed me the state law that allowed them to charge an extra 1% over the initial quote for the work.