The post doesn't necessarily suggest the sentence is steep, it just outlines the surprised reaction of people in the courtroom: "Even after everything that the public has learned about the duplicitous life of SBF, the decision was met with a heavy silence in the courtroom".
I found it a straightforward description of the factors behind the judge's stated reasons for the sentencing decision, including the fact that SBF perjured himself at least thrice during the trial, obstructed justice via attempted witness tampering and refused to admit or apologize for his criminal activities, etc.
In fact, many of us are wondering why he got such a light sentence.
It reads like an unfinished piece - cut off to meet a publishing deadline.