I’d see it a bit differently. To me, it doesn’t really feel like a coincidence that PSA has been running into issues with the 1LR cases lately. For example, those cracks PSA calls “flow lines” only seem to show up on cases with that serial number/format. And in the video that was shared, it also looks like only cases from that same run are affected.
That being said, maybe it was just by chance that a few of the cases in the video showed that flaw. From what I’ve heard, the new cases are actually supposed to be much harder to crack open, mainly to stop people from resubmitting cards of opened cases to try their luck at a better grade.