I do not think they are tech geniuses, but the original statement was not limited to tech "geniuses". Overwhelming majority of STEM people are not geniuses.

But Musk specifically is/was admired and supported by STEM people and culture. He was untouchable for years. Tech people share ideologies and ethical values of Zuckenberg, Musk, Amodei, you name it. Tech educated people spent years developing those philosophies and defending them.