https://www.minecraft.net/en-us/article/minecraft-snapshot-21w07a:
Exception: Diorite and Granite and Dirt no longer generate below y = 0
https://www.minecraft.net/en-us/article/minecraft-snapshot-21w08a:
Andesite no longer generates under y=0
According to the Minecraft wiki, Stone patches would generate below Y=0, like Andesite/Granite/Diorite does above Y=0. Those patches are made of Andesite, instead of Stone.
What I expected to happen was...:
Stone Generates in patches below Y=0
What actually happened was...:
Stone didn't generate. Instead only Andesite generated, in these patches
Steps to Reproduce:
1. Create a new World
2. Go below Y=0
3. Look at the Stone Patches. They're made from Andesite, not Stone
Linked issues
Comments 2
Well, it can be, but it's not authorative. It's probably just a mistake in their article.
FWIW, the snapshot changelog doesn't say that stone blobs should generate, however it mentions that andesite blobs should generate. https://www.minecraft.net/en-us/article/minecraft-snapshot-21w07a
The Minecraft Wiki is not a valid source of information.