Is that not how Apple treats all their Mac Pros since the 6,1 in 2013?
edit: you will experience this with Apple support. They have no clue what machine you have, and offer answers and suggestions based on the MacBook Pro models
I've been an Apple user since the mid 1990s, they've always been this way tbh. They always dumped products that have paper thin profit margins.
Ain't broke, don't fix.
15 years and still going strong.
THAT'S VALUE
The lack of care for tower users started since the final sales of 5,1 ended. It's still crazy to me that they built the 7,1, as beautiful and functional as it is (including MPX modules) to quickly abandon it.
This is true, but as an example I put my M1 Max 16" 64GB MBP (4-5 year old computer) and my 7,1 28core 192GB w/6900XT (5-6 year old) computers side by side and the M1 Max wins it hands down every time in many tasks (except for GPU power of course, and the M1 Max is no slouch).
I think once the 6,1 came out and quickly abandoned, a lot of people who still needed PCIe slots (especially audio and video folks) moved over to Thunderbolt and USB-C.
It will be interesting what they will do with the 9,1, that is even if they'll do anything with it. I really think without PCIe GPU support in M class Macs, for me personally, the Mac Pro serves no purpose. If you really need storage and audio/video PCIe support, then you can do something externally without issues.
I think Apple is taking the road of slowly killing off the Mac Pro. I would personally be surprised if they release another Mac Pro. What are they going to put in it a M5 Ultra? Still limitations with RAM and lack of PCIe GPU support...still a great and functional chassis tho.