Sure, but what's the carbon output to recycle the Apple II? What's the carbon output to build new rPIs? What's the carbon output to rebuild whatever software to

Sure, but what's the carbon output to recycle the Apple II? What's the carbon output to build new rPIs? What's the carbon output to rebuild whatever software to run on the rPI? Until we can measure these things with extreme precision, it's kind of a shot in the dark. You might be able to make some estimate of it currently, and then you could graph the cost of making an rpi and recycling the Apple II vs the power usage of the Apple II over time (- the power usage of an rpi). So I agree with you, but there are externalities to replacing the Apple II with an rpi that need to be accounted for as well. This would be a cool data experiment.