I could see the "final Intel Macs" having a value to folks; somewhat similar to the 2015 Macbook Pros which many considered the "last good Macbooks" before Apple fumbled things with the 2016-onward Macs and their gimpy keyboards.

In this case, I don't think the first ARM Macs will have undesirable hardware ala the first few years of Touchbar Macs, but there will be some straggler software whose ARM ports will be delayed or will never happen. For those who depend upon that software, the final Intel Macs will be invaluable.