Not sure where you're getting your information but as far as I'm aware, the majority of EV batteries can be reused or recycled.
Unfortunately only a small percentage are recycled worldwide at the moment but that's partly because the industrial processes for it have not been fully commercialized yet.
However some manufacturers are already taking the lead on this.
In the case of Tesla for instance, and as clearly stated on their website:
Tesla battery recycling
Renault are also recycling all their used batteries, according to them.
EV batteries that are not immediately recycled can also be repurposed and reused - both Nissan and Volkswagen reuse their old EV batteries for automated guided vehicles in their factories, for example, while VW is also starting a battery recycling plant.
See details in the BBC article below:
Electric cars: What will happen to all the dead batteries?
An increasing number of used EV batteries are also being reused for storage of excess produced solar energy by home consumers - I have actually read posts from people who are doing this, who provided images and schematics of how they set up their systems to do this.
The article below from the Union of Concerned Scientists explains some of the factors involved.
The Second-Life of Used EV Batteries