"Realistic" is determined entirely by the values of the overarching system. The fate of the people at the long tail of the supply lines isn't valued. That's the single, solitary reason that this shit is still happening. Change that, and the system will adapt. The mines will get better, or they will be replaced with other mines that do it properly.

Stop settling for what your corporate overlords tell you is doable. We can do anything as a species if we choose to, good or bad. Our history shows it. Industry has every reason to tell you it's impossible because they don't want to spend the money to insure supply lines are ethically handled.

If we can mine coal in the United States without children and with relative safety, they can mine Cobalt in the same damn way. Cobalt doesn't by virtue of being cobalt need to be pried from the Earth by children.