Yeah, noticed that, too. Made a GIF to show what it’s about:
Reverse engineering for Minecraft won’t work, though. Despite both games using a similar approach, the implementation is vastly different. In any case, it seems to be based on Perlin-Noise, if you’re interested to further dive into that topic.
Edit: I think I’m kinda wrong. Theoretically it should be possible to develop a mod for Minecraft to achieve a world generation like Stonehearth. Not sure, how feasible it is, though.