Try having triplets. A perfectly organized (and frugal) life suddenly becomes a huge priority, whether you like it or not.
In my case, I also took a minimalist approach and work towards getting rid of clutter, selling off spare computers or equipment for hobbies I don't have time for anymore.
I haven't had a "singleton" (single born child), but I can imagine the same organizational/simplifying demands are made of you, but to a lesser extent.
Having had one and having seen friends with twins, multiples are definitely harder. Yes there are certain economies of scale but I don't think they even come close to balancing up the additional chaos, effort and exhaustion.
(And +1 for sympathy and respect that you've had triplets and are still here to tell the tale).
In fact, my experiences (which contrast the article) are what has enabled me to be here and sane. Before, we were fleeting, disorganized, and didn't plan.
Now everything is regimented and organized and "minimalized". That's how we're sane and fairly happy (it feels like the movie Groundhog Day, often. And you really have to focus on marriage time.).
We're finding our experiences to be much more sane than others, when we talk to other multiples parents. They haven't developed a simple life, and a simple set of regiments.
My grandfather was one of seven children, and they had one drawer each for toys and another drawer for clothes. They seemed to turn out OK.
Of course this kind of thing requires the co-operation of both parents, but that's true of a lot of things.