I hear everything you’re saying. My honestly held belief is that F35 would make a much better second tour than a first.
As a JP straight out of training I would be very excited to get my hands on a brand new F35. However, for various reasons (airmanship, experience and knowledge amongst others) I think guys would be much better placed to have a tour under their belt before they transition to the limited flying on offer on an F35 squadron.
This is not a policy I have heard of, but simply the educated opinion of a QFI.
BV