I understand why Samourai wallet devs had to cut a plea deal with the prosecution and change their plea from not guilty to guilty. The deal was 'fair', pleading guilty struck out the money laundering charge, which has a maximum sentence of 20 years. They pleaded guilty to operating an unlicensed money transmitting business and the maximum sentence for that is just 5 years. So i can understand their thinking: plead guilty, forfeit millions and just spend a few years in prison, rather than pushing on with the case and probably losing and then spend a longer time in prison.
This is sound logic. It's better for them to close the case with minimal losses than to continue being pursued and lose the case with much greater losses. Therefore, as the saying goes, it's "the lesser of two evils."
A guilty plea would get them the lesser of two punishments, and they might not serve the full sentence. After serving time, they could petition for clemency, or they might be able to strike a secret deal with Trump for early release in exchange for a hefty fine.