So9
The baby might roll off the counter and splat onto the floor.
IMHO, babies should never be placed on a hard surface.
They require much gentler handling when being changed.
Something SOFT, like a bed, sofa, or even on the floor (if you have nicely padded wall-to-wall carpeting.)
But please don't place 'em on a hard kitchen countertop.
The little critters may seem fairly durable, but they're actually quite fragile when they're young.