It's about a mindset of the purpose and necessity of imprisoning so many people, not an individual case.
Aside from that, do you believe that Elon Musk in particular deserves to have his freedom restricted, be in a potentially dangerous situation (even in low security), and be locked away from society because of a series of tweets that heavily jumped the gun and stated funding as "secured" when it wasn't?
Being barred from serving as Chairman for three years and being forced to step down in addition to a $20m fine doesn't seem to satisfy some people's bloodlust, I have my doubts that being forced to step down as Tesla CEO would.