Even so, as an initial "world reserves" estimate, it's absolutely puny. Take into consideration that past the first "dozen years" demand will increase massively, at full adoption lithium will likely be short lived as a primary material to base batteries on. We don't know the extraction potential for whatever the "remaining" and "unknown" reserves are but thankfully EVs aren't intrinsically tied to lithium like ICE is to oil, so if lithium becomes overmined we are more likely to switch to other materials than go to extremes to extract more of it.
I mean, sure, if we search long and hard enough we will probably almost always be able to find/produce something, but I don't think asking 1 million per liter of gas would be such a great idea.
Hoping that there will always be a scientific breakthrough just "right in time" to solve our resource problems is great. I love optimism. It's also extremely irresponsible to depend on it.
But yah, a one time thing for us.