I'm not convinced that the ethics of any philosopher, a matter of praxis by definition, should be considered strictly apart from the values which that philosopher really acted by (as this article portrays). Not following your own ethics seems as dishonest as openly proclaiming "do what I say, not what I do", as dishonest as an evolutionary biologist advocating creationism in their free time. Because of this, IMO the article does not incur in ad hominem for presenting Rand's life.