He's not getting off lightly!
Meanwhile a sizable campaign has materialized around this case and many people do feel he has done enough time and should be free without any restrictions
It's just that, in layman's terms, a pardon means "you did nothing wrong", whereas a commutation means "you did something wrong but were sentenced too harshly". As far as I know that's also what it more or less means legally (with some nuance).
I'm absolutely not a fan of "tough on crime" sentencing, but he absolutely did do something wrong, even if we ignore the contended "murder for hire" claims he should have been sent to prison for a number of years (personally, I'd say about 5-10 years). This is also by Ulbricht's own admission by the way.
This could be said for any number of people rightfully detained by the US for crimes of incredible magnitude.
It’s not possible to make it not exist.
It's certainly not what pardons are for.
But "always make sense" doesn't seem to be in Trumps OKRs...
That's mostly a symbolic difference though. The practical end result is the same