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.
IMHO convicting somebody of such a thing is a crime in itself. Simply not excusable. Especially when the crime is essentially a form of white collar crime at best. Bank robbers, drug dealers, and some actual murderers often get more lenient sentences than that.
I think this was a case of the justice system being abused to make a political point. Casually destroying somebody's life to make a political point should be criminal in itself (with appropriate sentences and public disgrace). I don't agree with Trump's politics. But this seems like he's righting a clear and obvious wrong; so good for him. Regardless of his motivations.