Trump should be in prison for his many, many crimes. But making friends with the district attorney and later mayor was probably one of the smartest moves he ever made.
This ensured Trump would never be tried in criminal court as he should have been. His prosecutor/mayor friend protected him, and so all Trump has ever had to do when caught breaking the law is pay a fine for his crimes.
So his crimes became bolder and bolder. That's what happens. Moral hazard.
In this case, Trump commmitted fraud. Big fraud. And he was caught and was fined when he should be in jail.
So this is a vindictive nuisance case because Trump wants to punish anyone who exposes him to the world for exactly what he is.
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