You hear about mass shootings (random public ones that are committed to generate news stories, not ones where it’s crime, usually gang related, with multiple people shot due to poor aim) when the media wants to leverage it for a specific angle. Shootings that play into the desired narrative linger for a very long time, shootings that go against the desired narrative disappear in a few hours to a few days. It has nothing to do with how many people were killed or what questions have or have not been answered; it is simply a function of how much it works towards the desired narrative.

The desired outcome of a gun ban was achieved and the fact that there are still unanswered questions means that continued discussion hurts the desired narrative, so it isn’t discussed. Not only has it “served its purpose” but bringing it up now could have a negative effect for those that control the media so the media never brings it up. No, we don’t know why he did it, we don’t even know for sure if he actually used bump stocks, but none of that matters; the headlines got the immediate response they were designed to get and then they moved onto other headlines before questions outside of their narrative were asked.