he issued collective responsibility - also, it says bad about officers to be alive when captain is dead, they were obliged to resist and fight but they prioritized their own survival. I would say that he was merciful on them, he should torture them for failure.
And this is why everyone kills themselves on the Black Talon, when you kill the Captain.
Thrawn at least knew better.
The Sith and much of the Empirial Officers, are dumb.