When using the following script, the recipe can still be crafted in the Worktable and is still displayed in JEI. I expect the blacklisted recipe to not be craftable in the Worktable and not be displayed in JEI.

import mods.pyrotech.Worktable;

Worktable.blacklistVanillaRecipes(["pyrotech:tech/machine/stone_kiln"]);