note the airline industry has moved past firing pilots who make mistakes, since that turned out to be a recipe for more plane crashes, not less. Instead, they find out why the mistake happened, and fix it. In some cases, this involves firing the pilot. They do not do that by default.
ACK on the going too draconian. 100% on the find the problem and fix it instead of blaming someone or something as a cheap solution
U.K. railway like this. Root cause analysis. Sometimes the train driver is at fault, but usually there’s a way the problem could be caught or prevented.