This is, by far, my most conservative opinion. Credit to Donald Kingsbury for the quote.
Honorable mention re: the same problem, "dogfooding"[0] is gone from the software industry, which is why users often feel like they're getting suckered by the companies they patronize; the decision makers, who don't themselves use the product, absolutely see the users as suckers.
So it's not necessarily that QA was useless, but that it was actively harmful
The alternative is what we see in politics and big corps:
1. tragedy happens
2. "leader" adds some checks to avoid the problem
3. the check literally will not stop the problem
4. everything sucks
And it's always a ratchet that goes in the same direction: More rules, more laws, more checks, more crap.
Example: Sweden had it's first mass school shooting and politicians suggest stuff like locking doors for unauthorized (the shooter was a student!).
A few years before that Sweden had a terrorist act where a dude jumped into a truck and drove into a crowd. What did the politicians do? Blame car companies for "not having a way to limit access to who can drive a car". Yes. They reinvented car keys. They also made everyone walk home instead of taking the subway. Did anyone die on the subway? No. Were the roads now CRAMMED with THOUSANDS of people in the middle of the road, making an extremely juicy terrorist target for someone with a truck? Yes, so much so that I was a bit scared walking home in a way I wouldn't have been if I wasn't now a part of a crowd for no damn reason.