There are sometimes some contests like these: „join our newsletter for a chance to win X”.
The thing is, you could join just to get a prize, without reading the newsletter itself.
The other thing is, the contest organizers likely are aware of this.
It’s a „you’re fooling me, but I will fool you more, but I know you are aware that we are fooling ourselves”.
„I know that you know”.
Game of „knows”.
We know people don’t read, but still organize the contest.