When I was first getting into programming and computer science as a student, I was so into these kinds of super-customizable rabbit holes. My whole life pretty much centered around the keyboard and terminal. I was all in on knowing everything about the entire stack and making it do whatever it was I wanted. I'd spend hours to save a few keystrokes. That wasn't so much about the productivity trade-off as it was about…
In no way do I want to come off as rude with this comment, but to me what you are saying is not at all different from "when I was young I used to work out and eat healthy... a couple of decades later, I just fund it all so exhausting". Customizing your computer environment is good. Eating healthy is good. None of those need to end up in a "rabbit hole". Everyone can be tired of life and give up due to exhaustion, but…
What if there were a Silicon Valley company whose entire business model was selling a computing environment that didn't need to be customized? Like, at all? What if they did a whole bunch of psychological research, and found that most humans work pretty much the same way, and designed this environment in such a manner that they could get 98% or so of the way toward optimum productivity, right out of the box?
Knowing the Valley, they would give themselves a silly name, one having nothing to do with computers or data or anything. Like a fruit or something. But multiply the base price by billions of potential users... the idea could be worth trillions!