"In August, he pleaded guilty to charges of money laundering and obstruction of justice. He reached a plea deal with prosecutors in June. He had potentially faced a maximum of 20 years in jail."
I think he should be in prison for more than 71 months. The punishment of the bitcoin related crime can improve the reputation of bitcoin.
if the law in prison actually enforced I believe 20 years is enough, 20years without internet, without comunication and etc could make a mental him down and he will feel remorse.
but I'm not sure the law in prison actually enforced.