It is because the 1yr old kid ain't just any normal kid.
In fact, the kid is actually a man-eating monster born from pure evil. From some Karen's womb together with a giga-Chad's seed, the ultimate monster that could possibly end the world was conceived. What kind of monster? Well, you decide. It can be a vampire, werewolf, ghoul, cannibal or even a troll!! It can be a troll that 'trolls'?, or maybe just a baby troll that eat kids. So like a monster baby troll? You get the idea.
By Karen and giga-Chad, I meant it figuratively. I bet the kid would have a very terrible childhood.