Not sure how you come to that conclusion. Lithium is not a fuel that is consumed in the process. It is a recyclable component. And there is no dangerous imbalance in the global lithium cycle. Which can't be said about the carbon cycle.
Just because every technology entails some environmental impact does not not mean all impacts are the same.
In theory, batteries are not currently recycled in any scale equivalent to these proposals. Plastic is also recyclable but most of it ends up in landfills due to it being uneconomical.
I do wonder (and a quick google search didn't turn much up) how the rates of industrial plastic recycling compare with consumer rates.
I hope Tesla has a plan for recycling the batteries they manufacture
They're already recycled at >50% https://www.pv-magazine.com/2019/07/12/lithium-ion-recycling... although there's still no need to recycle them in volume (since we are only starting to deploy Li-Ion batteries for EV and stationary storage, which last for more than a decade)
But lithium is only 5%* of the value of a battery, so it's the other 95% of the impact of battery production that matters.
* the market for mined lithium raw material may be worth $20 billion, compared with $43 billion for refined products and $424 billion for battery cells - https://www.bloomberg.com/news/articles/2019-07-28/the-lithi...
Interesting, I had never thought of a "global lithium cycle" before – can you elaborate?
In other words, does Tesla saying they’re the better option than gas make it so?