not really. if you really want to go by definition in the book and apply it the CEO role, Amodei is CEO of an LTBT, so it's in the CEO's goal to benefit humanity. You can believe in his sincerity or not if you want, but using the CEO label as a definitional reason as to why he must lie is factually incorrect.
This seems like useless pedantry. Suppose a person really does have belief A and expresses it for years, they become a CEO of a company, and keep saying A. Are they lying? Well, maybe their beliefs magically changed when they became a CEO, but the more likely explanation is that they think expressing their belief in A is more important than their company's interests.