It's about how bad the flight management computer is, the ridiculously short testing timeline, and how it is likely to never be fixed:

https://twitter.com/davidshepardson/status/12154759339661926...

That comment leapt out to me to. I would wager that the same sentiment has been expressed about any sufficiently large project whether it's successful or not. There's always going to be someone in a company who thinks someone else is an idiot.