Even while being entertained, one should beware manipulation and continue to think critically.
The video, while charming, is a rear projection. It is not affected by anything in the front side of the box.
The 'industrial light' provided is dark, not lit, and even if it were lit, those are not the kind of shadows it would create.
People making the light swing are not making any difference to the projection whatsoever, yet people continue to move the light as if they were causing some kind of change. It appears as if their participation in this art increased their emotional enjoyment, gave them a sense of creativity and even joy, as well.
Not precisely April Fool, but perhaps a pleasant but cautionary tale against being fooled.
I found that a thoughtful outcome of this art. I hope you do as well.