I did not say -- at all -- that I can't imagine that kind of power requirement.
Not at all.
What I said if you read the rest of my comments is that I find it difficult to believe there is a specifically single-desktop-machine use case for that kind of power over and above the Mac Studio.
The reason I mention this is that high end (TV and cinema) CGI just is not the domain of single machines anymore; it's the domain of render farms. The people who do that kind of work for TV and cinema now expect to run farms of commodity hardware that can be swapped out and replaced. And that technology is available to everyone in a way that can be constructed more pragmatically.
Scientific workloads, similarly: most of that market is not going to spend a bucketload on a single Mac when they can spread their risk with cluster computing.
App testing: again, an application for clustering, and low cost hardware spreads risk.
So my point, again: given the existence of the iMac Pro line, and the M1 Ultra Mac Studio (with its evident astonishing GPU performance), given that I imagine most Mac Pro users never put an expansion card in their machines (which is the grand theme of Apple -- people don't upgrade or expand, usually), and given that cluster hardware is commonly in use and well-supported, is the niche for single mega-expensive desktops really big enough?
I don't think it is -- you think it is. But I think you can disagree with me without imagining me stupid, as I disagree with you without doing the same.