the filler is uncraftable on MC Eternal by the creator of MC Eternal normally it wont be a problem from SP but because mym restricted the builder for farmworld only it makes it harder to builder bigger builds i think the filler should be craftable or sold on the market
You kinda answered your own question. No point in adding it to the market due to it being restricted only to the farm world, are you only going to make massive builds in the farm world lmao. Reason its banned in the overworld is because of claim bypass. Having it disabled by the mod author is fine.
We don't enable things that modpack author's intentionally disable. As braun also stated, it's restricted due to claim bypass issues on top of this so it would serve little purpose anyways. Thanks for the suggestion however