The idea is that helping people become self sufficient is more important than the concerns about who knows what. Even if both parties know who the other is, it

The idea is that helping people become self sufficient is more important than the concerns about who knows what. Even if both parties know who the other is, it is still the highest form of charity. Though probably it is possible to do both. I suspect there are many modern charities that help people become self sufficient where neither the donors not the recipients know who each other are. Disclaimer: IANAR (I am not a Rabbi)