Well Niantic gonna livestream the event on twitch. Other youtubers might as well join the livestream, but they aren't allowed to livestream there on their own afaik. But they can record footage for videos.
And what will fsuatl see if he spoofs at the event location. He is not participating because he has no code. He shouldn't see anything from the action there.
I sometimes too watch some of his videos but they aren't as informative or fun to watch for me like others. He's often complaining about Niantic, or giving info that is provided by Niantic themselve.