The proper comparison for a battery would be a gas tank.How so? Really? I'm not saying his numbers are wrong, but that it's an incomplete comparison.
You don't see the big black hole in their data? So what if Tesla battery production creates a bunch of CO2? If it's production creates less CO2 than the production of an internal combustion engine and all of its unique components, the comparison in the op is not just useless, it's misleading.
But that's cool. Go with it.
A meaningful comparison would be the vehicle as a whole: battery to gas tank, internal combustion engine to multiple electric motors (including the environmentally-scandalous rare-earth magnets required to make them), the steel body panels to the lightweight plastics (and the oil to produce them), etc. Who cares about just a battery? Without anything else, it's just something on which I can stub my toe. Give me total (environmental) cost of ownership, from the time all of the raw materials are in the ground until the end of its service life (200k miles, perhaps?), including all necessary fuel/energy inputs throughout, all repairs, etc. From there, adjust it for passenger-miles (based on typical occupancy, not maximum), cargo ton-miles (ditto), whatever is the vehicle's major purpose. Anything else is cherry-picked propaganda.