From the NYT quote at the article link above:
“This could backfire,†said William L. Youmans, a professor of media law at George Washington University. Mr. Acosta “gets his credential now, but it empowers the Trump administration to come up with conduct-based criteria.â€
“A ‘rudeness’ or ‘aggressive behavior’ policy would have a huge chilling effect, and would be much more damaging to the whole system,†Dr. Youmans added. “If it lowers the bar for pulling credentials, it’s a recipe for a more tepid press.â€
And this is what an admission of guilt looks like from the ivory tower of the NYT.