Comment by voidpointer

I think this is just the way the decision tree works in safety-sensitive areas where many human lives are at stake. The catch-all in the decision tree, if there is no exact solution, is always the "get to safety at all costs" option. There will be some window of trying to resolve an issue (here: telling everyone to shut down devices) and when that does not resolve the issue, the catch-all kicks in. That's just the pattern and in an environment like an airplane, where margin for error is slim to non-existant, there is no deviation from that pattern.