It’d be absurd to believe nobody tested these, and that no individuals involved in relevant standards bodies were aware of this weakness.
We live in an absurd universe, the absurd should be expected.
"absolutely no way that there is a $100 bill on the sidewalk- if there were, somebody would have picked it up already"
Those 8 bit certs were out for over a year, in the public. So nobody tested them. At least no independent security researcher.