It's just unfortunate that Trump, and now, excessive pardons are politically polarized, which could cloud the fact that justice was done today. I don't credit Trump in any way for doing "the right thing" or even having a principled position regarding Ross' case. Clearly, others with influence on Trump convinced him to sign it. It doesn't matter how the pardon happened. Biden should have already pardoned Ross because that crazy sentence shouldn't have happened in the first place.
Although the murder-for-hire charges were dropped, transcripts published by Wired in 2015[0] show Ross Ulbricht openly discussing contract killings: he haggles over price, suggests interrogation, and even provides personal details about a target’s family (“Wife + 3 kids”). These charges were dismissed partly because he had already been sentenced to life in New York, making further prosecution moot—but the transcripts themselves factored into his sentencing. No killings occurred (he was likely scammed), yet the conversations challenge the notion that his crimes were purely non-violent. He was willing to have someone killed to protect his idea.
[0]: https://archive.is/pRG3U.
It was further complicated because a couple of the law enforcement officers involved with setting up one of the six murder-for-hire scams* stole the Bitcoin Ulbricht paid and it was also felt that trying to prosecute based solely on the other chat logs would have been difficult. The FBI agent who arrested Ulbricht was interviewed about it recently[1].
* The other five are said to not have been law enforcement, which makes it curious the number of times Ulbricht was scammed in this manner.