Earlier quoted context omitted.
Can you imagine leaving your laptop on a plane? In a situation like this I'd almost certainly grab that and try to take it with me. Airlines are already woefully incompetent in the best of times with your luggage, what's even the timeline for getting this stuff back? I don't buy the whole "we need it for the investigation", buddy if something in my carry-on stopped the front landing gear from opening you've got bigge…
The investigation is not the primary reason your told the leave your stuff its to avoid delays in an evacuation. Imagine that the plane was less lucky I fire had started in the front nose cone section. Then people trying to get there bags could jeopardize the safety of the passengers in the front of the plane.
The complaint is about the FAA hold passenger items after the emergnecy is over while they "investigate"
The process should be
Evac -> Fire Dept clears the plane > Airline gets passengers there stuff
it should not be
Evac > Fire Dept > NTSB Looks at things > FAA Looks at things > Someone 3 years later Passengers get their things
because the FAA as the latter policy, people will be more prone to try to take their stuff, then if they knew once evacuated they would get their belongings before leaving the airport, not at some undetermined time later
FAA Policy increases the danger for everyone.