Minecraft wiki entry for The_Wild_Update, associated text: "This is really cool, but won't be necessary because Sculk Veins (on the edge of growths) can be placed in all directions like Glow Lichen. That means you can find veins on top of anything, including Deepslate Bricks, which is a better approach than a specific block type." – @kingbdogz on Twitter, February 18, 2021