Honestly, I thought Cringely's decision to try and tie TMI to the current financial crisis was a bit of a stretch, but it applies perfectly here. TMI officials took a huge risk [coulda wiped out a bunch of the Northeast] and only avoided catastrophe because of luck (the reactor had a strong than normal containment vessel.)
Wall Street basically did the same the mortgage boom -- they just lost the bet. Now we're all paying.
Where both failed was properly planning for what happened when something really went wrong. Wall Street was prepared for the failure for X% of people to stop paying mortgages because the values of homes "always" went up. I.E. A foreclosure just meant selling a house that was more valuable than when it was bought. This worked great, until home values fell and the taxpayers now get to fill that hole.
At TMI operators were ready for one thing to go wrong and to fix it, but they weren't ready for when something really went wrong because their IT systems couldn't process the results of a real crisis.
I get it that most engineers seem to be pro nuke, but forgive the public if they're a bit skeptical. Guess what, doctors always seem ready to operate, your stock broker always wants you in the market and your lawyer is willing to sue at the drop of a hat. People tend to have confidence in their own competencies.
The job of the nuclear industry is to prove that their equipment will be safe -- even when operated poorly by greedy executives who might be willing to take the risk of huge amounts of wealth vs. a 1 in 10,000 year chance of a failure. That's a reasonable risk for the head of a nuke, but a terrible risk for a country with 100 reactors. (I.E. you will have a breach in the next 100 years.)
It's not that all such employees will have such an attitude, but that at somepoint, someone will.