What you're seeing is the community making him into a martyr.
Martyrdom is a concept that is somewhat foreign or unexpected in American culture. Similar to the delusion that the country is somehow immune to totalitarianism, there exists a common assumption that martyrs, like dictators, only happen "in those other, less free countries".
The very nature of what it means for someone to be a martyr basically guarantees that people will react strongly. This is why they can be a unifying force ("we must ${dangerous_but_important_task} for ${martyr}!"). This is also why the more talented oppressors take steps to prevent martyrs such as having them "disappeared".
I see this situation as similar to the question of what to do with the medical data acquired from the Nazi camps. A good argument can be made for both sides, but in the end we should make use of the resources we have.
So if it takes some "deification" or get the larger community to finally wake up and do something about these prosecutors (and other related people), then I would suggest that any "deification" at least served an important purpose. Given that Swartz spent a lot of time and energy trying to get people to do just that (wake up and actually fight the "big" problems in our society), then... I suspect he would have approved for the same reason.