You're missing the big picture. Firstly because they're reducing the cobalt requirements in batteries which will massively help. Also long-term lithium and cobalt are metals, they are found all over the place. Oil and coal are products that require life and as far as we know Earth is the only planet in the solar system to have organics like that.

But we can mine asteroids for materials to build batteries. Long before that we'll have automation to mine the materials on Earth does not requiring human labor. Long-Term this is an improvement it isn't a zero-sum gain at all like you're making out