Based on what are you speculating this? I just looked at the indictment, which is linked in the article. Page 8 shows that the timeline between the relevant inside activity and the article’s appearance in Bloomberg running to multiple weeks or even a month. More generally, I don’t see anything that would require an inside trader to know exactly when a news story on these kinds of topics is going to come out. If they know a stock is likely going way up SOMETIME in the near future, that is enough to conclude that the trade is a sure bet. So, no need for a specific tip (as to article timing) from the reporter, and therefore presumably no need for complicity by the reporter.
*I do not intend this comment to mean I believe the actual reporter actually was not complicit. I don’t know the facts of this case beyond what is stated in the story linked here.