chocolote12
A Penguin Flailing Against The Keyboard Of Life.
Basically, the issue is that they're a hundred coordinated people with hands the size of barrels and two fingers the size of puppies each. Five We would have the equivalent dexterity of a single human, except for the bit where they're separate platforms who have to move themselves around to get anything done, rather than a bunch of much smaller and neater graspers attached to a highly dextrous platform designed for the sole purpose of carrying them, bending them, or rotating them appropriately, in any combination or configuration they please.
It's like the other end of the High Magic problem; they can grab things just fine, but they just don't have the anatomy to do the highly complicated stuff.