Explain your idea

Allow Treated Wood Planks and cosmetic variants be usable as regular planks for misc recipes, not including ones which are treated variants (ie Slabs, Sticks). For example, a 2x2 should make a crafting bench with Oak Planks, but don't with Treated Wood Planks.

We can't easily do that.

We can't tag them as minecraft:planks because then we have a recipe conflict between sticks and treated sticks, as well as chests and crates.

So instead we'd have to add specific recipes for:

• crafting table
• cartography table
• fletching table
• smithing table
• grindstone
• loom
• note block
• jukebox
• beehive
• bookshelf

And that's just vanilla blocks we'd have to satisfy. Treated planks can not be used to replace normal planks. But you can always use a sawmill and make some Fiberboard to maximize your plank output ^^