That's nice, but a thing doesn't require your comprehension to be relevant. Now that we've each had a chance to play reddit on the ftb forum, let's step back and discuss.That's nice, but it also isn't relevant to the comment quoted. The question was specifically about tedium and difficulty, not how Gtech adds complexity. Try to force me to do something manually, and I will get bored. Add in artificial difficulty by adding in dozens of steps in your manual process, and I will yawn and walk away. Has zero to do with processes that can be automated.
You said tedium != difficulty, and all things being equal, I agree with you. The key point is that this doesn't mean that very tedious mods cannot be fun by way of difficulty. Tossing in rhetoric about artificial difficulty isn't helpful: Using your definition, I can express every single tech mod ever in terms of how many steps it takes to accomplish something, and suddenly there's no such thing as a difficult mod.
If tedium as an obstacle to be overcome doesn't appeal to your sense of difficulty: fantastic, whatever suits you. Yawn and walk away. I'm sure I pass out from boredom with mods you find difficult too.
But it appeals to many players. In the right hands, tedium can be a strong weapon in the game developers arsenal, and without it we'd end up with a ton of Thermal Expansions and no GregTechs, and nothing "difficult" for me to do in Minecraft.