I wonder if they're keeping the events of Ghostbusters 2 involved as well. The first one...okay, that's a singular "monsters show up" event but the second one kind of had the Statue of Liberty walking around and the Titanic docking and putting the ghosts of its passengers on land.
It would take one massive "mass hallucinogenic chemical terrorism" story to put that particularly unpleasant event to bed...but the fact that nobody's seen ghosts in 30 years per the trailer, well, maybe it was believable after all. In-universe, what that would do to society would be...interesting. So somehow covering it all up is going to be an interesting event, and I want to at least see it acknowledged somehow.