Perhaps it is worth underlining the Iberia pilots were not flying their own private aircraft. At the risk of upsetting a few nigels on this forum a flight crew on public transport take on board the same legal responsibility as a train or bus driver. They are paid to transport public passengers who have paid them to undertake that task. Public transport pilots,train drivers, ferry captains and bus drivers fall in to the same group. You are paid to transport the public safely.
If you want to take risks and fly your own aircraft then go and do a private flight. Public transport is public transport. The Iberia crew and Iberia should be ashamed of taking risks with passenegers who place their lives and their trust in them.