the large percentage uptake over the last 10 years has been been...

the large percentage uptake over the last 10 years has been been dealt with (overly dealt with) by increasing lithium mining....
For simplicity sake (these numbers are pointless, more like ratios) let's say it's been a 10 fold increase and that it's taken EVs from 10 right up to 100.. Well these early stages can be supplied and even oversupplied by the mining increase but the next 10 fold increase doesn't take EVs to 200, it will go to 10,000.
The uptake of humans adopting a new technology can grow almost exponentially whereas mining cannot and that is why the next 10 years are looking great despite your completely true observation of something which seems totally illogical