Vikings like big... bows and cannot lie
“Smartfeed” seems to make money by putting clickbait thumbnails on other websites. I found this one while looking at one page under https://edition.cnn.com/
In this case, you can see a questionable advertisement for a questionable game showing women with questionable bodies in questionable poses.
With this kind of crappy “content”, it’s no surprise many people use some kind of content/ad blocking.
Maybe those are just decoy butts they're hiding under in case the enemy tries to shoot back.
Also, while doing research on what game this was an ad for, I discovered this RPS article about "Playing the games found behind clickbait adverts" which includes reviewing the game for those curious.
(Ad for Vikings: War of Clans, Plarium Games)