Well, if you're not willing to even read an actual scholarly work on the subject and instead to prefer to rely on pages like the ones Bill has cited, I'd indeed be less than convinced about your interest in the truth.
Though I'm more than a little confused by your "agree with" comment. Dr. Ali provides an overview, with reference citations, of the variety of positions contemporary Muslims hold regarding the "standard" view (as transmitted in Sahih Bukhari) of the age of Ai'sha at the time of her marriage. There's nothing to "agree with" or "disagree with", unless you think that Muslims don't actually hold the different views she describes and she's making the whole thing up.
EDIT: Are you worried, based on the title and my description of the author, that this is some kind of wishy-washy liberal Muslim apologetic piece? Because it's not...Dr. Ali pulls no punches when it comes to describing the entire range of beliefs and theology and jurisprudence in the Muslim world, both historically and today, regarding sexuality in Islam. She does draw her own conclusions and poses her own questions, but she is also very careful to separate her own analyses and criticisms from her descriptions of the views held by both classical and modern Islamic jurists. Her book is an overview and critical examination (in the academic sense of the word) of the history and application and modern theologic implications of the Qur'an and the hadith regarding both male and female sexual mores in Islamic jurisprudence; it is not, nor is it intended to be, a polemic or apologetic of any sort.