The broad shoulders on the male dwarves are fine but the narrow waist ruins the overall proportions. They should be thick set, sturdy and not like some gym bunny who neglected his legs. Legs could also be a little longer. Female dwarves are more anatomically tolerable at least.
Eh, the idea that male dwarves are "stocky"/broad of shoulders in itself is fine, but they went a bit overboard with the overall proportions.
It could surely be tuned down a bit without compromising the concept in any way.