I wouldn’t recommend anyone buy an electric for it to be their only car. In fact, I don’t think an electric is for everyone. If it fits in your lifestyle, then go for it. If not, then stick with what works for you.
The issue you touch on with common batteries, is compounded by the infrastructure they’ll need to swap, recharge, then rotate out to be place in another vehicle too.
Imaging how much space it will take to keep those battery packs, exchanged, moved, stored, recharged then cycled back out for the for next vehicle that needs one.
I think it is worse than that. As I read it you have to return and get YOUR battery back. So how many will be in storage?
The economies of owning a Electic will soon surpass the economies of owning an Internal Combustion Engine.