How do you suggest making the EVs more environmentally friendly? For the last 2 decades or so, I haven't noticed any significant improvement in the battery technology. The same type of batteries (Lithium-Nickel-Cobalt) are being used even now. Unless someone come up with a better technology, which uses metals and minerals that are more readily available in the earth's crust, this issue will persist. But given the huge amount of investment currently being poured into Lithium and Cobalt mining, I am not sure whether any of the major EV manufacturers are even considering a need for a different type of EV battery.
I agree, if the diesel/petrol cars are emitting more pollution and contributed to it. There's also the side effect of having more batteries and electric cars.
People just don't see this because all they think that it's cleaner, safer, and economical. But if they will look at it, the system and design of the car just actually changed but with its environmental impact, they're also different but the affection of it to it is also there negatively.