I'm not commenting to dogpile on you, I think the others have explained why the grid is less of a concern than you might think.
Just wanted to add that we charge ours primarily using excess solar from our home panels, which is an option through our system management tool. It takes longer, but it means even less grid dependency (and virtually "free" vs paying for electricity, which you're right, will go up in price... though largely due to data centers now, not EVs).
I won't be surprised if this becomes the norm for EV drivers in the future, as a kWh in the "tank" is worth more than one backfed into the grid. More responsible use for extra power not immediately used.