Similarly if your use case depends on a whole lot of fast storage (eg, the 4x NVME to PCI-E x16 bifurcation boards), well that's also now something Apple just doesn't support. They didn't figure out something else. They didn't do super innovative engineering for it. They just walked away from those markets completely, which they're allowed to do of course. It's just not exactly inspiring or "deserves credit" worthy.
When they introduced the cheese grater Mac Pro the new high end GPUs were a showcase feature of it. Complete with the bespoke "Duo" variants and the special power connector doohickey (MPX iirc?). So I'd consider that an attempt to re-enter that market at least.
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.
“Apple has also confirmed to 9to5Mac that it has no plans to offer future Mac Pro hardware.”
None the less, what Apple says or doesn't say doesn't really matter. If their plan for a new Mac Pro is secret, they'll answer exactly that when someone asks them about it. Doesn't mean we won't see new Mac Pro hardware this summer. Plenty of cases in the past where they play coy and then suddenly, "whoops, we just had to keep it a secret, never mind".