All absolutely mirages, but Tesla is probably a net positive for the environment. Fossil fuel emissions from cars produce a lot more greenhouse gasses than the electricity used to charge Teslas (even accounting for the fact that much of that electricity comes from fossil fuels as those plants burn it more efficiently and a good chunk is from green energy). Lithium mining sucks, but it is nowhere near as significant as automobile emissions.

Again, Elon is not doing anything he does for the noble goal of saving the planet. He says whatever he wants to market his businesses (or to feed his ego/beg for attention)