> The ecological impact of mining and refining of rare earths... is quite large

There's obviously no ecological impact of mining and refining fossil fuel. The Deepwater Horizon actually reduced the amount of oil in the ocean.

And unlike batteries, which are non-recyclable and always have been. It's common to throw the lead-acid battery from ICE vehicles into the nearest body of water, for example. It's definitely not the case that 99% of them are recycled today. Whereas recycling coal and oil is trivial and done all the time. /s