> Mac Pro disappearing from the product line is a testament to it
Apple removing/adding something to their product line matters nothing, for all we know, they have a new version ready to be launched next month, or whatever. Unless you work at Apple and/or have any internal knowledge, this is all just guessing, not a "testament" to anything.
Did you read the article?
“Apple has also confirmed to 9to5Mac that it has no plans to offer future Mac Pro hardware.”