I don't care to have a job where my mistakes could possibly end up killing people months/years from now, but I wouldn't mind seeing what he means by "hardcore coding test".
It’s just less likely you’ll hear about it if it doesn’t involve a spectacular plane/car crash, missile launch, radiation release, etc.
Ad targeting comes to mind (e.g., accidentally pushing opioids and worse at mentally unstable people because the computer inferred they are likely to buy).