The strategy they used speaks exactly to your point. The diseases were not "cured" in the sense that these people were brought back to a generic baseline. That

The strategy they used speaks exactly to your point. The diseases were not "cured" in the sense that these people were brought back to a generic baseline. That very well may have required a complex series of edits that are well beyond what is currently possible. Instead, they focused on a clever workaround that was simpler to implement, reactivating fetal hemoglobin. That's how they were able to cure two different diseases with the same gene edit. So you have a much larger pool of genetic and non-genetic diseases that can be cured now. For example if someone had low lung function due to lung scarring, this might be an interesting treatment to look at.