To put this into its proper perspective, see table 7 here: https://www.ussc.gov/sites/default/files/pdf/research-and-pu... In 2022, the average murderer in the Federal Southern District of New York (N = 58) was sentenced to a median of 231 months, which comes out to 19 years and change. No crime of any type had an mean or median sentence higher than 25 years; most were far less than half. So it should be really hard…
The well-considered federal sentencing guidelines put the sentence for this crime at over 100 years. That is, for an anonymous defendant at remove, our legal system believes that 100+ years is a fair sentence for this set of offenses.
So another way of looking at this is because of who the specific defendant is here, the court shaved 80 years off the "fair" sentence. I would consider that a light sentence.