Partially because most the insiders are on holidays. Partially because Jackson is new to the job and really hasn't formed a connection with anyone in the media that would leak rumors. And partially because at the end of the day it really isn't a big trade.
Although with Bourgault the writing has been on the wall for quite some time. Chaulk barely ever said anything good about the guy and when he did it sounded forced. Between the eye tests coming directly from Chaulk, basic stats that we as fans can pull from Hockeydb and then the advanced stats Jackson uses it seems the whole picture was pointed in one direction and Jackson made the move once he found a partner
Much of what JJ has done in the past month has all been pretty quiet until it actually hits the news as well.
Except for Arvidsson. I think we all knew it was a possibility while the Oilers were still playing.