Consequently, I am not fully up to speed on the details. What little I have heard, despite my best attempts, however, supports this author's take on things. Your response completely misses the point. While he may not have cried and did not take the stand to wail and moan, there is no requirement for him to do either. It is the state's requirement to prove their case. Try countering the author's charge that almost every element of the crime was simply absent, unproven, or unprovable. Then, maybe you have a point.
Of course you're free to have an opinion without being held to "beyond a reasonable doubt." But the jury is not and based on this piece, they may have failed in their responsibility. It definitely wouldn't be the first time and inevitably won't be the last, but we should abhor it, instead of embracing it. Otherwise, any one of us may be the next to suffer for it.
"Why didn't he testify on his own behalf?"
Because it is his right to not have to prove himself innocent. The accused has the right to be silent in this country and not contribute to his own prosecution.