You're conflating good product design with good company processes, but those are completely separate concerns. Of course a good product shouldn't require documentation because the whole point as a consumer product company is you are bending time and space to make something that people want to pay for. However in order to accomplish that there will most likely be some shit that needs shoveling along the way. Who does the bookkeeping at Github for instance?
My hypothesis is speculative. I think what we call "shit work" is in fact something that is less creative and as such is likely to be subject to automation/algorithmization.
In other words, with the right tools, platforms and algorithms you have less shit work to do.
A few things that can be considered "external bureaucracy", such as accounting, patents, legal stuff etc, that are kind of beyond your control, so they should simply be outsourced. For bookkeeping, hire a company. There will be some amount of interaction with them of course, but that itself shouldn't require full time involvement. I did that for one of my companies, worked OK for us.
