I completely disagree with that view.
We don't always feel we have much power in the world. But one of the ways in which we can best exercise the power we do have is by how we spend our money. It is the decent thing to make consumer choices which are, as far as possible consistent with our ethics and hopes for the world. It isn't about the personal becoming political it is about moral consistency.
I wouldn't currently consider buying a Tesla and we got rid of our Tesla shares.