I do wonder what Apple's custom-built servers are running for networking. I wish they still made Mac Pro-level chassis specifically for better IO. Thunderbolt 5 is nice, but far inferior to a PCIe x16 slot (which can hit 400 Gbps networking) nowadays.
If they were focused on the needs of the kind of person who moves enough terabytes of files around to need this kind of speed, we'd see them still making either computers with slots, or first-party 25Gbps networking.
I'm not really trying to criticize them for it -- Tim Cook's bean counters clearly did the math and they're certainly free to optimize their Mac R&D spend for things that'll sell college students MacBook Neos and Airs, rather than worrying about the MKBHDs, Linus Sebastians and Jeff Geerlings of the world (this is just a list of people I've seen using extremely fast networking).
They kinda hit a standstill on the networking side as they moved to the trash can Mac, and I think that had killed momentum towards any high speed IO besides the Thunderbolt ports moving forward.
I was hopeful they'd keep the Mac Pro going into the M-series era but after one version... it's gone.
So, it seems that Tim Cook decided at some point that while it's nice to make $5,000 in profit from a Mac Pro sale every day or two (okay, I kid, I'm sure they sell a bit more than 365 a year), even if they hang those "pros" out to dry completely and they defect to Windows, Apple would be better off spending their time focusing on ways to make the MacBook Air and Neo more attractive or profitable because they move orders of magnitude more units of those.
Note: I don't like this, but my feelings have nothing to do with it, I think it's just a classic Tim Cook Numbers-first business decision