It was quite possibly still an evacuation, in which time is of the essence. There is no "moderate urgency" evacuation protocol, and an important part of the evacuation protocol is "LEAVE YOUR LUGGAGE" (an instruction shouted continuously by the cabin crew until everyone's out).

Would you rather the crew deliberate for a few moments on how likely it is that the plane still catches on fire vs. the inconvenience of not being able to bring baggage? And what if they misjudge it?

You'll live without your laptop for a few days; you might not survive carrying it out of a burning aircraft.