https://de.indymedia.org/node/344525
Basically they fear, that green capitalism can work, so they attack the most prominent representant, so we all realize, we have to deindustrialize and live with very little.
I mean, there are some valid criticism of Teslas Gigafactory (and Musk in general), like that they pollute the groundwater already much more than allowed and the regulators are looking away.
But all in all, I am not that convinced, by such actions or manifests.
And Teslas or the Cybertruck are by themself surely not that ecologic - but they help make the transition much more, than continue to build combustion engines.