that's just alderon_matt's assertion. wendell and GN have triaged this to approximately 10-25% of units, seems pretty consistent acros a whole bunch of different environments.
https://www.youtube.com/watch?v=gTeubeCIwRw
similarly, the oodle maintainers only found it to affect a small % of machines (but reliably, of course).
https://news.ycombinator.com/item?id=39486930
The alderon_matt thing is actually carefully worded to say affected machines invariably degrade... but they don't say how many machines are affected. It's deceptively worded, intended to be read the way you read it, but actually not saying that 100% of machines are affected either.
at the end of the day game developers are just people too, and they're equally frustrated with the process/not willing to cut intel slack. but like, this is shades of the Ryzenfall thing (which, remember, contrary to early takes did have several real severity 9.0 issues behind it, including a PSP jailbreak and a UEFI module signing bypass, as well as memory encryption bypass and some other goodies - AMD doesn't issue AGESA patches for "root password lets you do root things"). People have moved past the facts and into the "trying to generate noise to get attention" on levels that are not supported by the facts.
https://www.youtube.com/watch?v=QuqefIZrRWc
the Alderon Games assertion, specifically, is very aggressively/deceptively worded and is not supported by the broader facts, nor does he have any real idea what can or can't be patched. as wendell notes - all kinds of "unfixable" hardware bugs are indeed fixed in microcode, routinely. that's why it's there, because of the pentium FOOF bug.
this isn't to say there isn't a degradation problem, there clearly is something (or more than one something) going on. but the alderon games press release is very over-the-top compared to all the rest of the evidence. GN is pointing at 10-25% and this is very consistent across a number of different operators, boards, environments, etc. That's the number Dell is getting in their validation (depending on the department/how stringent they validate), that's the number Wendell is seeing in operation in datacenter error reports. And they're thinking possibly some kind of fab defect affecting those units, basically (oxidation of the vias).
https://youtu.be/5KHCLBqRrnY?t=2280