I would find this easier to celebrate if it was a commutation and not a pardon, or if it was a pardon that went hand in hand with a change in the laws he broke.
Because their isn't a change in law doesn't mean the convictions were secure and bound by law before.
> a pardon that went hand in hand with a change in the laws he broke
Trump doesn't have the power to unilaterally change laws (fortunately!)