This will certainly encourage people to have *** without protection (Pills don't count as protection in this context).
I don't think, it will be that dramatic though. People still should realize that even if this method is advanced by genetic engineering or by what it's still is in the report (transplant), this will still be millions costing operation. Why risking to be infected by the worst ever virus of the century whose cure is worth of millions while condoms are freely distributed.
I'll agree that some idiots will get this feeling (some are having it despite the risks) but I don't think that all these years of the sensitizing program for safe-*** will be futile just because of this.
Anyways, it's really good news though I'm skeptical. First, it's a bone-marrow transplant (initially used to cure his leukemia). Also, it's that of a person who's immune to that disease. Now, even if with genetic advancements, they arrive to take that transplant cure to genes, it will still be really costly and like they said, will not really be able to administer all of this to these people. Moreover, transplant operations of bone-marrow is really risky. Even for curing of leukemia, it's failure-rate is quite high (just got a friend who died 2 weeks ago due to advanced leukemia and with 2 tries for transplant operations failure), so this feat might also be a fluke. Needs more information on this to get real hopes though it's a good beginning after all these years of ravage.