People who judge her philosophy after reading "Atlas Shrugged" or the "Fountainhead" will be making a decision based on insufficient data.
The author is correct, though, that her tumultuous and conflicted personal life should have no bearing on the analysis of her Objectivist philosophy. She wouldn't be the first person in history who allowed the flesh to overpower the mind.
Her personal life is known to us only because her predatory associates, the Brandens, after Rand caught on to their duplicity, were furious. They waited for her to die and then tore her to shreds in their 'biographies'. After that, all bets were off for Heller and Burns to finish the job. Ayn Rand's crime against society was that she was an anti-communist writing against the red tide of the 20th century. The pillaging of her character that has saturated the internet is a tragedy.