Apple's identified use case for the 2023 Mac Pro and these are:
Apple last did business with
Nvidia in 2012. It did not work out so a RTX 4090 wouldn't work with any macOS version of the past decade. If you need it you can get it through
GeForce NOW.
Core i9 is not a Xeon.
What is the financial incentive to go the extra mile for ~20% of impacted ~75,000 Mac Pro users that are up in arms over the CPU, dGPU, eGPU, RAM and SSD?
People are up in arms over a $1k bump to cover worsening economies of scale what more than that to to fund the R&D expense for said modularization?
Apple can live without ~15,000/year Mac Pro sales when it means a net gain.
So either buy/keep a 2019 SKU or go Dell/HP/Lenovo.
Dell moved 3.1712 million workstations last year vs Apple's ~75,000.
I am not being mean but I am putting numbers in relation to user demands.
Ya'll aint that many.