Batteries and their construction come out ahead over the life of the vehicle. There is nothing about battery manufacturing that requires slave labour. You could make the slave labour claim about anything being manufactured. As for your CO2 points, those are repeats of oil industry propaganda. Based on your point, why even bother trying to capture carbon when CO2 is so great, right? It’s a matter of amount. We need water to live, but drinking too much water will kill you.