The original post doesn't give much information, so we really have no idea what is going on in this story except for the outcome. Do you really imagine this father was sitting in his Barcalounger rubbing his hands together with glee and just waiting for his adopted boy to arrive so that he could torture him multiple times with infection from failed CIs?
I'm sure this father went into the first CI surgery never expecting that it would have to be removed due to infection. He was probably devastated that his child had to go through a surgery without a successful outcome. I'm just as sure the surgeon assured him that once the infection cleared up, a new CI would work fine. And in normal cases it would. Imagine what that father was feeling after the second infection occurred? Do you think he was happy, clapping his hands and shouting, "Woo Hoo! Now let's do it again!" No, he was probably even more devasted that this surgery didn't work and that there were additional complications to boot.
(And there is no way they took the CI from the infected ear and implanted it on the other side, like the original post claims. That would run the risk of transferring the infection from one side to the other. If there was an implant put in there, it was a new one.)
So now this father has a child with two surgeries that didn't work. Perhaps he is allergic to one of the components? Well, they have other brands/versions for people who are allergic, so if a doctor said that using one of these would prevent infection from occuring, at this point I think it's all or nothing. I can understand why at this point, a parent might want to proceed. They WOULD feel blame that their child went through all this, and to just stop would mean having done it all for nothing. But keep in mind, you DON'T know what the reasoning is for proceeding with a 3rd surgery, and there could be perfectly valid reasons to do so, rather than just as an extra excuse to torture a child!
Hopefully for the boys sake, the facial paralysis (which is always a risk, but IS rare) is only temporary. Only in rare cases is it permanent. This boy has had a terrible experience that I wouldn't wish on my own child, but that doesn't make it child abuse. What it makes it is sad—sad for the child who has to go through it, and sad for the parents that have to deal with the guilt.