When the Force Awakens came out, I wrote a joke about how the empire went stupid by hiring a second-time designer of the Death Star.
And here comes the exaggeration-1 in which it is detailed that the designer worked against his will and deliberately wiped out everything, then he was killed, then his boss was killed and nobody knows about anything. Maybe it is not accidental.
I suspect in the next part will tell about how by negligence the big boss did not understand and took the old drawings.