Your first point is kind of negated by the fact that he specifically says he used a second-hand battery from a scrapyard. Indeed, what he's doing is a very good

Your first point is kind of negated by the fact that he specifically says he used a second-hand battery from a scrapyard. Indeed, what he's doing is a very good way to keep it away from any environmentally unfriendly process. I expect that in the somewhat near future, used EV batteries will have a similar second life as house electricity storage. You don't want an EV that's got half the range it used to have, but install it in a house and it's just useful.