This is the way Media work. They throw it, they dont give much information, they just install it, accuse without proof, etc. They make a confusion, they throw the number, they just make people make their own association: 20k - corruption.
This said, I dont believe this guy, or almost every person with an important charge of every government of this country (K, Macri, Massa, etc) is honest. I underlined almost because honesty in this country still exists, and in important charges too. People like Taiana, Sabatella, Zamora, Lozano, etc.
Etchegaray specifically, I dont trust him.