Certainly there is a hierarchy of movements at Patek and the $200,000 watches are not in the top tier, when it comes to finishing.
The classic comparison is the CHR 27-525 PS in a 5959P vs the CH 29-535 PS in the 5370P. Only one of these movements is finished with the tender loving care that Patek built its reputation on. The CH 29-535 PS is carrying the coattails of the CHR 27-525 PS, if we’re only considering finishing.
The sad part is that the “mid-grade” Patek movements hit the sweet spot in terms of complexity, technical innovations and robustness. The old guard movements weren’t always in-house and they were technically inferior, but the new movements appear to be cost engineered. It’s as though the old Patek exists only in $350,000 watches and the new Patek is actually a mass market product with a nice story around it. I hope the market eventually forces Patek to course correct on this approach, but today Patek can just paint its way out of a difficult conversation with a green brush of the dial.
I would like to hear the case for not including interior angles in a fine movement, such as the CH 31-260. I do feel it is a bit intellectually lazy to rely on the presence of interior angles to determine whether the movement is finely finished to the top degree, but the circumstantial evidence points to Patek avoiding inward angles for cost cutting purposes only.