And yet coal mining is and was much, much worse, but we've been doing it for over a century. Oil drilling is also extremely harmful as is natural gas drilling and fracking.
The giant advantage battery mining has over those others is that the battery components can be recycled, so the mining needed will become very small over the long term.
That's definitely wrong. I'd be interested in where you got that. I think it's close to 20%, so the decimal is probably in the wrong place.