Are you suggesting that’s the reason they use them? They use laptops because desktops are too big. The laptops aren’t there as some sort of a contingency for a power loss. They’re there to do their research work. You know, how scientists on earth use laptops, and or desktops.

How do you know that? Desktop form factors are much more flexible, making them effectively smaller. They don't need a case - you can disassemble them, build them into cabinets and consoles; you can reduce their volume to a keyboard (or less).