Cargo Bikes

i don't really know much about frame geometry/angles and such, but is there a compelling reason why this bike comes with a very short stem? if i replaced it with something like 80mm, would is severely affect handling? could it be to stop you clonking your kids on the heaD?

i like the 'tech documentation' for the workcycles kr8.

Why are the brake levers pointed so far downward?
That’s so that they don’t smack your kids in the head when you turn. Please leave them that way if you carry kids on the bench. You can also adjust them horizontally if that works better for you.

I find it difficult to ride without hands on the Kr8/Cargobike. How can I do this?
You can’t.