I don't recall having every stated, or even implied, as much.
The thread title is "Is the new 7,1 Mac Pro a failure on arrival".
I disagree. The fact you accept the Mac Pro as being only a single version as currently defined by Apple does not exclude discussions from others that it is a failure for their needs.
Again, an i9 based tower may be a real need people have. But that's a different ask than a workstation. That's a different Mac, even by your own admission.
It's like constantly nit picking at the MacBook Pro because it's not a netbook. Even if you want a netbook, it's not the same thing.
The Mac Pro doesn't have any relation to your feelings on wanting a totally different Mac. Apple built a Mac a lot of people were asking for. They just didn't build the Mac you wanted. That doesn't make the Mac Pro a bad Mac or a bad product.