In that case, Ford pardoned Nixon to prevent a trial, where a conviction was still possible. In this case, there will never be a trial, and hence, no possibility of a conviction. It's a well-meaning sentiment, but a pardon is not applicable here. Better to lobby against the laws Swartz was accused of violating.

Nixon's acceptance was seen as a admission of guilt. I am not sure it would be wise to petition for a pardon, not only for a crime that may not have been committed, but for a crime that many at this site feel should be legal behavior.