Musk has in the past and very recently supported conspiracy theories. Dr. Fauci, one of the greatest public servants we've had in this country, was accused by Musk of 'killing millions'.

Musk is a right-wing extremist who will protect his own.

You use very uncommon (or I'd say, left-leaning) definition of "extremism". Basically, expressing opinion you disagree with, is extremism.