I have no idea but there is a subreddit
https://www.reddit.com/r/everyoneknowsthat/
28k members is a pretty good reach for just one song
If hasn't been asked there I sure as shit will. Those are both very good leads to try. Especially workout videos. I've been (on the ad side) thinking it might be for a board game. Like Pictionary or Win, Lose or Draw. If you know what I mean? I remeber them being hit shows as well in the 80's. It has a sort of, for lack of a better word, annunciation vibe. Everything was this neon pastel loosey feel but take every lyric literally and succinctly. Like how music videos used to spell everything out Anyways..
I know one thing and if this turns out to be an ARG or, it might be a reach, a viral marketing campaign. If it is it would be one of the most brilliant fucking swerves everr.