Everyone’s minds are going straight to porn, but I have an explanation for this:

There is a lot of lore in OW; Blizzard has a ton of videos on YouTube that do a deep dive into it. Entire mini episodes of the stuff. My nieces and nephews (all under the age of 8) love it every OW video Blizzard uploads. They didn’t know there was a game, either. To them it’s just another cartoon.