The article doesn't need to make the presumption of innocence - it's not a trial, it's showing how this is helpful to a victim of assault. There's no "two sides" argument here.
If you check out the the Project Callisto website they outline the protections there are for accused - namely that they can never be named to the lawyers who get involved by the project. That has to be done by the individuals making the accusation to the lawyers.
It is - as the article says - a way of letting the victims know they are not alone.