A judge and system who would give him 2 life sentences for this should not be trusted when he also factored in things which he wasn't charged and convicted of.
There are only mandatory minimums -- not mandatory maximums in sentencing.
I feel like me might disagree on Ulbricht, but overall mandatory maximums make a lot of sense.
It is common that several outcomes are subject - with the defendants specific agreement - to be evaluated by a court on preponderance, not a jury. This was not judicial malpractice.