I did do something. I made an editorial video discussing the community's role in abusing the term 'OP' and other related attitudes that lead to mods like GregTech in the first place.
First, thanks for the editorial. Unfortunately, it ended up being based on some flawed assumptions to support a point of view that doesn't appreciate that some may enjoy the tedium of building a ridiculous multi-structure oven (for whatever reason). By your own reasoning, it is a sandbox, and as such convoluted rules, no rules, rules that are tedious to you, etc., are all house rules and as such welcome to play.
For the assumptions, in hopes that it makes a better argument for you:
1. When you define Overpowered, you frame the concept around competition. While it is certainly more identifiable within that context, it is not exclusive to it. The term has been around since many of us were scribbling on character sheets in decidedly non-competitive environments long before the Internet was invented. Or, if you prefer to look at it another way, the competition is often the game itself. The rules and settings that have been agreed upon lend the concept of relative game mechanic balance to everything from Chess to FTL. Overpowered is, as it should be, clearly subjective. For a group of people sharing an experience, consensus defines what is and isn't cheesy.
2. Grinding is in no way an invention of MMOs. Traditionally, this mechanic was referred to as the treadmill - repetitive tasks employed to achieve an artificial goal, particularly in games where the skill ceiling is low to non-existent. We can go all the way back to Dragon Warrior or early FFs on the NES to see that grind preempted MMOs (and non-sub MUDs) by well over a decade. In an experiential game like Minecraft, the absence of skill mechanics does not mean that when a mod attempts to provide a goal ladder (grindy or otherwise) that something terrible has happened. Just the opposite - it provided an alternate way to play in the sandbox.
Lastly, the rant about configs is off the mark. Having choice, regardless of how many menus it is buried in, is decidedly better than having none. Most mods have configuration files, yet you only seem agitated that it is being used as a way to explain that you can alter a mod you don't like to better suit your taste. In other words, you make it appear as though you would be happier if the mod you disliked removed options (singular vision!) so that it becomes easier to justify your initial impression. Opinionated, sure, but not a particularly strong argument.
I see where you meant to go with the editorial, but I think if you made some allowances for other play styles and zoomed your historical perspective out a bit, it would go a lot further in supporting your point of view.