Based on oscilloscope analysis of the VRM output in a linked thread elsewhere in the comments it looks like the board’s VRM design, or its configuration by the board’s BIOS, may be the most likely suspect.
But there are less-researched reports of similar issues on other boards as well, which makes things a bit more murky.
Given the uncertainties there it may put some people off from buying into the TR/sTRX40 platform in general. But to offer a blanket recommendation to avoid is a bit premature.
It could even be an uncorrectable flaw in the device design, in which case AMD will likely do as they did in 2017: replace the parts.
Shouldn't these devices have been tested by AMD and motherboard manufacturers for months before they were released? Including on workloads like Prime95 which are well known to uncover system instabilities.
Keep in mind also that this is not the first time in the Zen/Zen2 history that AMD has shipped buggy products: there was the segfault bug, the random number generator instruction bug, and the unbootable Threadripper on recent (at the time of release) Linux kernel. The worst part, to me personally, is that they were all "surface bugs" that could have been detected by AMD with a little bit of testing.
I've been wondering why Supermicro isn't releasing any Threadripper motherboards (while they do for Xeon-W). Maybe this explains it: the consumer CPU business at AMD is a circus and Supermicro wants none of it?