Call me cynical but when they are at the program level of the Loyal Wingman design, they are still quite a bit away from going into commercial airplane production with that. I give them that the production line for the 3-4 protoypes is in itself a prototype for a future series production and highly automated, but that is something normal when using modern production techniques, because hand made one-offs are simply no longer acceptable, even as prototypes. Much less so, if you want to proof your RCS design with them.
Yes, far from going into commercial production, in particular with the production volume and scale of tooling needed for something like NMA never mind NSA, but still an important proof of concept. Keep in mind it's more than production, it's about the end-to-end data flow that resulted in the item being produced, and the data part should scale well.
That are in my opinion more of a foot on the breaks statement about a new airplane. Boeing is still sorting out their future production method. As long as we do not get statements about the state of the new cockpit architecture and a break through in large scale automated production techniques we are far off a new design.
The time line will most probably look something like this --> certification of MAX-10 --> certification of 777X --> finalisation of cockpit architecture --> finalising production reform --> launch new aircraft
The thing is, Boeing will need to get the production reform way before the new aircraft because they will have to train the vendors in the new techniques what will take a few years. Otherwise the launch could take a 787 turn. No good if Boeing is ready but not the vendors.
I agree with the major steps, but of course in the background the work is going on in parallel rather than serially.
Boeing is already using partners on T-7A namely Saab, so presumably they are up to speed how to share the tools and techniques.
We had at least one Seattle Times article talking about the roll out of MBSE for NMA before was shelved.
It pointed out that indeed there were growing pains, so hopefully there will be improvements by the time the actual next program gets launched.