You didn't read far enough. Tesla has not eliminated cobalt.
"Metals used in lithium-ion EV batteries such as nickel, lithium, and cobalt are known to cause a variety of ailments, from cancer to nerve damage. And yet the extent of the risks posed by handling these materials is just beginning to come into focus."
Cobalt has not been phased out YET. I've had my share of inorganic chemistry courses. These metals are extremely carcinogenic.
And Tesla is using Li from countries that put their people in horrific conditions. And don't know how people support Musk and what Tesla is doing.
Lithium-ion batteries need to be greener and more ethical (nature.com)
While I certainly agree greenhouse gases need to be eliminated, I don't know how coal burning electric powerplants used to charge EV's are doing that. There are a whole lot of things that have to happen before EV's make environmental sense, including SMR's or other safe energy sources, and we are far from being there. AT THIS POINT IN TIME, hybrids make sense. EV's do not, until battery and other technologies advance. Centerpoint can't keep Houston powered, how are going to power EV's?