In a private company, the owners pretty much say whatever the fuck they want. Yes, there might be a few people in the company they are guarded around, but for the most part, the owners of a private company can and will say whatever is on their mind, and do whatever the hell they want so long as it turns a profit.
That's usually how they built the company in the first place.
However, in a public company (which includes any social media style company, Public relationship company, etc, etc), due to accountability, public relations, etc, you can't do that. You have to keep your opinions to yourself, or at least run them through some sort of filter system first.
Assuming he's not trying to tank the company, Musk doesn't seem to realize this, or just doesn't care.
Oh well, my Dad once said twitter is full of twits, and this is just proving it
