The rumour that he had pledged $45 million per month to Trumps campaign is what really caused the damage plus Democratic supporters have said that they will not buy Tesla cars due to his support of Trump.
https://old.reddit.com/r/unusual_whales/...donate_to/
https://old.reddit.com/r/unusual_whales/...donate_to/
It's not the least charm of a theory that it is refutable. The hundred-times-refuted theory of "free will" owes its persistence to this charm alone; some one is always appearing who feels himself strong enough to refute it - Friedrich Nietzsche