If you don't support the current punishments, which evidently don't deter the crime, what's your idea of how they should be strengthened to adequately deter financial crime? I'm not trolling.
In particular, there seems to be substantial evidence that, at least past a certain point (and we can argue whether we are at that point or not, but it's not something self-evident either), what matters more is how likely the punishment is to be applied than how harsh it is, so increasing it further doesn't really do anything productive, just provides a public spectacle.
That's not to mention the court's complete lack of concern for recidivism. Look at Bill Hwang. Slapped on the wrist for insider trading -> billions of dollars of later economic damage. Likely chance we'll see the same pattern of behavior from Milton. I'm generally for forgiveness and second chances, but not in the realm of steering thousands of lifetimes worth of honest economic influence.