Battery recycling is coming. Several groups are working on it, but it will not get beyond the prototype stage for several years yet mainly because there are relatively few batteries available to recycle. EVs have only existed in their modern form for about 10 years and very few batteries are at end of life yet. The volumes are starting to pickup as non-Tesla manufacturers ramp up production. Maybe in another 10 years enough of the early generation will have aged out and some of the new cohort will have wrecked and need to be recycled. Until then, this is not a significant problem to worry about.