Recently my daughter befriended a tiny ant while at the blacktop at the local rec center. She was sort of taking a time out from interacting with her human friends for a bit.
Then one of her friends came over and squished the ant, thinking it was funny, saying "it's just an ant" when my daughter complained.
It really bothered me. Not the death of the ant, obviously. (so what, I step on them all the time)
I don't know if you have kids, but I think there was something a bit off about that girl and her choice to kill the ant. Maybe you would consider her "smart." I didn't.