I agree that the CEO is not the company and should not use the company as an amplifier of their own personal beliefs or views.
That being said, I don't buy that you (or anyone, I am not pointing fingers) _don't care one wink_. Maybe you don't care on this very topic because you disagree or simply have no interest in politics. But I'm willing to bet that on another topic closer to your heart (pick your favourite), that could reflect on your views and relationship with the company.
And actually, because the voice of a CEO is globally impactful on the brand of the company, CEOs tend to be publicly rather quiet. Exceptions apply.
They are free to do whatever they want, but the CEO is a representative of the company, not the company itself. I don't care one wink about what the guy handling my business expenses thinks of the POTUS. His opinion on such matters has zero value to me. It was an odd thing to do for any company which is storing sensitive data of its customers.