He was able to identify a large group of CPUs used in W680 chipset motherboards (i.e. using stock Intel power curves, never seeing a lick of overclocking/overvolting) which exhibited issues.
It would seem enthusiast ricing is, at best, an aggravating factor to some other underlying cause.
If the latter, I am afraid I don't see the point you are hinting at and need more clarification.
What you are getting at is Turbo boost, which is not a new thing. We can split hairs over the incremental enhancements to Turbo boost over the years of course.
https://www.intel.com/content/www/us/en/support/articles/000...
So you kind of have to go all in on Turbo boost 3.0 as the issue and then explain why the non-K variants of the i7 and i9 don't seem to have the same frequency of occurrence.