I'm surprised nobody has commented on the fact that the pictures only depict women using the "wheelbarrow." Usually it only takes three posts to get to the misogyny.
All kidding aside, if I ever had a single 20 lbs object made out of lead I guess this could come in handy. Otherwise, for actual useful things like sand, gravel, concrete, water, dirt, etc. that I would actually want to carry and not spill out when I set the damn thing down, I will use a real wheelbarrow.
I mean honestly, what the fuck happens when you want to set it down?