1. The article made a strong case it was not a campaign contribute and took out the prosecutors best argument. It was not a cover up because it would not have been reported before the election.
2. However, there is a risk to prosecutors when they allow people to plead guilty to crime which is not or crime or which the person did not do. When these facts come up they are strong grounds for a withdrawal of the plea.
I would expect the prosecution thinks it has evidence of Trump's intent. Like a recorded call. Either that or the Prosecution lacks ethics.