Was that specific mod team playing fast and loose with IP rights? If not, then it’s irrelevant
Completely missing the part they didn't ask for permission to mod the base game either..... and that Thaumcraft (the original mod) had assets consisting mostly of random images copied off google images. Yes you can't make that up. "You can't steal what I've rightfully stolen!"
There's a "Direwolf20" on hacker news too but that user has nothing to do with the famous Minecraft modder afaik.