Tesla is all about electric cars and electric revolution is all about saving the environment through decrease of fossil fuel use and efficient use of electricity. Bitcoin is not an efficient use of electricity at least for current times when most of the electricity produced are still through fossil fuel. But the only criticism of Musk is why didn't he realized a one and a half month ago. Why did they come up with a plan to take bitcoin as payment and after 49 days realized it's not green?
If you carefully read the comment on his post, then you would know that everyone is laughing at it. After all, there are studies that this is not so, there are even links to these studies. CZ also joked about him and asked how effective fiat funds were. It's funny, but this is an obvious manipulation, even in the media they talked about it and the next day he repeated it.