I'm not arguing they should delay anything? Merely pointing out the availability of much cheaper and faster ARM Macs has accomplished an Osbourne like effect already - that Mac Pro is outdated and overpriced right now, and buyers on the new and used markets know this.

I don't think its a controversial argument to say in 2023 there are increasingly few use cases for which the current Intel Mac Pro in that configuration at its MSRP is the good or appropriate choice left? There wasn't that many to begin with at $52k even at launch in 2019... Remember, this is a computer with relatively old 10th generation Intel CPU tech, retailing for exactly the same price it did at launch in 2019.