Framed this way - then “replacing” this kind of human exploitation is definitely a good for humanity. If someone doing a job is practically a slave, then replacing them with an electron to token converter is a good thing.

The number one goal of AI should be to eliminate human exploitation. We want robots mining the minerals we use for our phones, not children. We should strive to free all of humanity from dangerous labour and the need for such jobs to exist.

If Elon Musk wants Optimus robots to help colonize Mars shouldn’t he be trying to create robots that can mine cobalt or similar minerals from dangerous mines and such?