The impact of watching so many investigators put out that aliens inhabited the planet many thousands of years ago is to shift the paradigm from one of smurking at the idea to one of accepting it. The investigators are not singled out as near loonies and the narrative does not make sure to end with incredulity. So, yes, this series does appear to be doing yeoman work in shifting the paradigm.
In that sense, I’d say, by watching The Event, we may be watching the “wrong” program for the “right” reasons. The Disclosure we wish to see may be happening on Ancient Aliens.
The episode I watched on underwater cities is to be found at: