Because we move from step 4.2 to 4.3 of the run (or whatever the steps are in the updated run flow). The event has nothing to do with it.
EDIT: the question put forward was removed, so the answer I made in the above paragraph isn’t relevant anymore.
Point is, in the model, the event dispatcher only exists for the purposes of card effects, because that’s the only thing that cares about it. You could call it the “card effect event dispatcher”, if you want, as to not infer that it has effects on the internal operation of Netrunner.
So Crisium directly inhibits it. That’s the model. It works for everything in Netrunner currently. If there’s a different functional model that also works for everything in Netrunner and supports this alternative CtM interaction, I’ll gladly hear it.