I don't think your examples feel like the simple options to me. For example: Batching should solve a specific problem, it's not really complicated to implement

I don't think your examples feel like the simple options to me. For example: Batching should solve a specific problem, it's not really complicated to implement but without a need adds unnecessary complexity to the system. Simplicity in this case would be no batching and just handling the inputs as they come. One-button interfaces while minimalist are not simple, you've already covered why they're complicated. They can be simple though, if used correctly, but you're intentionally over-complicating to make a point. Even no button interfaces with gestures can be simple an generally intuitive. But you're correct that my simplicity may be your nightmare. I use DWM because I don't need or want the complexity of a full desktop environment. Most of what I do use the same vim keybindings, and runs in the terminal. The settings for all of those are in a git repository and I install a new machine or VM with a single line that I've memorized at this point. To you that may seem like a brittle hell, to me it's the simplest most stable system I can design.