Your PM to me sounds close to a saying a PMTS oriented skier could not become an examiner in the RM division.
That would not surprise me at all. Sad, but not surprising.
Clearly your impression of some ones PMTS skiing has brought you to incorrect conclusions about PMTS.
I would recommend the PMTS instructor camp for you next year. Attend that, which has clinics of your choice so you make it your own camp, and then form an opinion. The V1 movement analysis software clinic was awesome. Nolo was posting a question as to whether it is a useful tool for teaching, and the PMTS group already has been using it.
This ski instructor camp had instructors and PSIA certs of all levels from all over the country. (Including from the RM division including National demo team members)
These people are very very familiar with both styles of instruction and see lots of positives with primary movements as a teaching tool. You are not familiar with both systems. You think you are, as is obvious, but your statements consistantly show a lack of actual experience with these movement patterns or how they are used in teaching or a progression.
At the instructor camp you can have conversations with Nat demo team members and lots of other PSIA III certs and discuss with very experienced people what the overlaps and differences are and how that translates into your own and your student's skiing. You'd have a great time!
(and Diana with the V1 software will kindly but truthfully reveal whether rotary inputs are a positive or a negative for true carved turns)