I actually agree with you, but this is exactly the opposite of what the author is saying. Charles Pierce (a long-time Boston politics reporter, not a "tech guy") isn't blaming Ortiz for killing Swartz, he's blaming her and her husband for being disingenuous in their public statements about the prosecution and for the casual way they mention a six-month Federal sentence as if it's nothing.
He also attacks the obviously political motivation behind the prosecution:
I guarantee you, if Aaron Swartz hadn't killed himself, he'd have been in an Ortiz For Governor campaign commercial one day.
He also attacks the obviously political motivation behind the prosecution: