What great service did he do?
And mistreated? Perhaps, but not any more, and certainly quite less given the media scrutiny, than any generic prisoner.
There are plenty of more deserving souls out there, people like this -
https://broadly.vice.com/en_us/article/mom-of-young-man-jail...
https://www.reddit.com/r/news/comments/5lc9z3/justice_dept_l...
Or intervene on behalf of people who take a deal for the sake of not being able to defend themselves.