This is also just neglecting the value that the rest provide

For example, what about the people who make the farming machines? And then to take it further what about them making software for it? What about the people making software to make software? What about the ones making the parts to make the machines? And so on

We don't live in a vacuum anymore. You don't do farming with just a few simple tools, and farmers aren't self sufficient, they participate in society and use all the other society stuff too

Trying to weight voted by provided value gets super complicated and messy fast, especially if you start including stuff like disabilities and such. Is this really the way to go?