What credentials: a hearing parent who did not choose an implant and put the decision on her child, a hearing person who served as spokesperson for the Deaf until he was fired by them and an organization that did an 180 degree flip flop on cochlear implants for children to embrace a position we had been advocating for years.
How many children were denied implants and how many years were lost due to your "credentials" and "assessments" that have ultimately been proven wrong by thousands of childhood implantees who are now growing up, going to college, graduating, working, marrying and taking their places in the Deaf and deaf communities.
Sorry but what you call "anger" is disgust at those like you and the "credentials" and organizations you hide behind who refused to see and to permit deaf children to be treated as the unique individuals they are but rather treated them as pawns caught up in your agendas.