Tesla model 3 was first released 7 years ago, and whilst yes the model 3 isn't a cheap city runabout, the battery chemistry and battery management system is indicative of most EVs sold between 2017 and now.
(A lot are switching to lfp chemistry but we'll come on to that.)
So battery life of a model 3 and the model Y using NCM batteries is averaging 15% after 200,000 miles. And they have a very large dataset to reference, not like an average of 10 cars.
The even earlier released x and s using the same battery tech is showing only 12% Deg on average over 200,000 miles.
See here
https://insideevs.com/news/723734/tesla-model-3y-battery-capacity-degradation-200000miles/
What does this tell us? That it can be reliably predicted for customers to expect their EV that started life with a 250mile range to still have 220 miles of range after 200,000 miles.
The average car mileage at scrappage in Europe is 150,000 miles, therefore the batteries will generally outlast the car
2 points from this, a scrapped ev will have a much higher value than a scrapped ice. Not only because the batteries can be used as power walls, but if not used for that, the materials are valuable for recycling the materials. More likely what will happen is the recyclers will test scrapped battery units and banks of cells averaging over 90% capacity will be used for the aftermarket spares supply for older vehicles and for remanufacturing battery packs. The rest will be recycled more traditionally. Remanufacturing batteries, repairing banks of cells and keeping battery packs going wayyyyyy past 200,000 miles will be much cheaper replacement than going back to Tesla or Kia for a replacement. Circular economy and all that
Lfp batteries by their very chemistry are more durable than NCM and NCA batteries. They are expected to last 50-75% longer than NCM/A due to their lower energy density and greater resistance to heat degradation. And its been proven in industry for years, so saying 'ah but they've only been fitted to EVs for 5 year's doesn't wash, as the usage of lfp batteries in industry to be charged up to max, then used gradually over many thousands of cycles is almost identical in use case.
So by the time your two grand ******* has started out as a last of the line ice 2030 new car, it will be nearly 2040.
So you don't have to worry about lack of affordable belt in oil petrol and diesel clatter-boxes for another 15 years or so