This isn't particularly cursed. I mean we've had avalanche pulse generators for well over half a century easily. It's just exploiting semiconductor characteristics they don't teach you in the usual garbage undergrad textbooks.
> the usual garbage undergrad textbooks
Out of interest, please could you give some examples of textbooks you consider garbage, and some you consider not to be (undergrad or otherwise)?
Well, if it's not an advertised spec on the datasheet, and constrained in the direction you're using it, then all guarantees are off and it's on you to qualify the parts on a batch-by-batch basis.
I think that counts as "cursed" from a design-for-manufacturing perspective.
"After a production run of 12,000 units the TR-808 was no more." https://secretlifeofsynthesizers.com/the-strange-heart-of-th...