I would suppose, from a safety outlook, those tools carried on in a passenger cabin space might get used to harm fellow passengers or to breach the integrity of the pressurized cabin in flight.
“...those tools carried on in a passenger cabin space might get used to harm fellow passengers or to breach the integrity of the pressurized cabin in flight...”
You are right. And using them to loosen the seats or the overhead doors falls into that problem, also. Not to mention trying to break into the pilot’s cockpit.
wy69