1. The notion that a cure must be widely applicable is the foundation of clinical medicine, even with personalized medicine. You simply can't run clinical trials with a sample size of 1. Just because an individual treatment is tailored to the patient doesn't mean the process and plan of action is generated new each time. The OP is stating how there is no way to generate the 'curative' stem cells and the odds of them appearing in natural populations is extremely rare. This case is an awesome but exceptional situation, and is not a basis to claim a breakthrough in the fight AIDS. As a proof of principle, even anti-retrovirals show that an individual can be healthy post-infection.
2. There are no FDA approved therapeutics for disease that use bacteriophage, there is only some things as preservatives for meat. Most treatments of genetic disorders are generally nonspecific - they treat symptoms and gene therapy is still a developing field. Even in that case, the delivery vector is usually generalizable - usable in many patients with slight individual modification.
3. in vivo refers to in glass, or in an experimental set-up, this is most clearly not in vivo.