I think their point was that the crash was because of the fact that: 1. Catalina had a lot of breaking changes, bugs and crashes that caused the apps to crash -

I think their point was that the crash was because of the fact that: 1. Catalina had a lot of breaking changes, bugs and crashes that caused the apps to crash - which required special attention just for Catalina 2. They were given only 4 days to fix the mess that Catalina resulted in. At least in this case.