Thanks for your thoughts - everyone is entitled to their own opinions. However, from traveling to, and visiting Greubel Forsey on a number of occasions (as referenced in the text) I can honestly say that I believe what Stephen told me.
I have seen over time the development of the watches. From the first decision to commit resources and undertake a particular project - not all of which see the light of day in a finished watch - or that get finished in the form originally envisaged at the start - to the completion. Initial designs, prototypes (that run for months) to test the timing in a variety of positions, temperatures, daily wear; to trials with the form of the watch with different finishing; to an accepted final watch. I have known Greubel Forsey put a watch on hold for two years, at the penultimate finished watch because they wanted to change the cage design (two prong cage to three prong cage on the 24 second incline) or move a power reserve a few degrees on the dial.
Do GF have an OCD compulsion with chronometry, design, and finishing? Yes. Do I believe that after seeing their watches timed, designed, and finished at close hand over the past decade and written it down in the articles as referenced. Yes. Does this cost a great deal of time and effort? Yes....
Would I buy this watch if I had the funds? Yes.
Andrew H