I can see the value in this one. There are a few interesting assumptions made in those posts.
You like to compare prices so here goes.
Native5 G10 S110V = $152
Manix2 G10 S110V = $140
You mention time to cut out the liners but do not touch on the fact that Spyderco's golden made backlocks are manufactured with very, very tight tolerances. I assume that is time consuming and adds cost.
You mention milling the liners. I don't know how Spyderco does it but I assume it is not milling but rather waterjet or laser.
You also make the assumption that machining G10 is easy. If the backlock is gonna be as tight as the Native but do so without liners I would assume that the tolerances on the scales need to be just as tight as the lock. Maybe it is easier on the equipment but precision is precision.
The new backlock Manix is an all new knife. The old backlock manix had liners and didn't have a floating stop in. Assuming that this will be cheaper to make because they made a similar knife in the past is probably not correct in this case.
I also believe that the blade stock specs you listed are incorrect. This Backlock Manix has noticeably thicker stock than the CBBL Manix and has way thicker G10. If the dimensions of these materials is not shared with other models then that too could be a factor. I think it probably does share the blade stock with either the Yojimbo or Military/Para but am not sure.
I don't need to hear your other idea as I don't think that Spyderco has ever been anything but fair and honest with their pricing.
For me it isn't enough of a price difference to even care. If I want it and it is $20 bucks more than I would have prefered then I will buy it. Someday I will have long forgotten about the small price difference and all I will be left with is a sweet knife that I wanted.