USGS themselves say the US has 700,000 tons of proven lithium
reserves, and 7 million tons of potential lithium
resourceshttps://pubs.usgs.gov/periodicals/mcs2020/mcs2020-lithium.pd...
The article you linked also doesn't do your point any favours - some quotes:
>"Can lithium batteries scale up? According to this quick and purely speculative math, the short answer is, with current reserves, not just no, but hell no."
>"Even this little sketch of the issue highlights the obvious conclusion: we need to do our best to get away from single passenger cars -- even EVs -- and rely more on smart city design, walking, biking, carpooling, trains, shuttles, etc."
As for the relative prices of electricity sources - I'll just say it again, the energy returned on energy invested for renewable sources mean that an all-renewable grid would have a higher cost per unit of electricity. The only reason it's cheap now is because most of the manufacturing is done by countries that are happy to burn oil, coal, and whatever else they can find, to do so.