A quality 30 with lots of detail. Certainly some well used tropes here, but that works well in a 30. I like the inter-linkage between them that suggests the plots that could arise from using the lot of em.
No need to cloud fantasy with the practicalities of reproduction. There are many legends of creatures, gods, beings with clear genders being spawned from rocks, foreheads, and various other weird sources. Perhaps these dwarves did it the old fashioned way and got cursed/blessed into being tubers at a later point.
In a high canyon in the mountains, the players find a skeleton in a cage suspended from a pole. A few miles further, they find another, and a third contains a partially rotten corpse. The fourth contains a living man who looks as if he hasn't eaten in days. Turns out to be the local way of punishing criminals.