I have to disagree with this. The 3600, 3600X and 3900X have to contain the lowest binned chiplets (with a couple of underperforming or entirely borked cores), while the 3800X and 3950X would have to contain the highest binned (flawless) chiplets. Those latter, pristine chiplets were probably destined to be high end Threadripper and Epyc CPUs, and that's why they will suffer in the value sentiment; they charge a premium to match the pricetag they originally would have demanded.
The question is, how will this translate into real-world performance and gaming results? It's still too soon to tell, especially with the availability issues with the 3800X.