When screen time actually turned into a teaching moment

On Saturday, we had gone for a shopping as usual and were on our way back home. My 3yo son was sitting in his car seat, quietly munching on a snack, when suddenly he shouted, “mom look! firetruck!”

I glanced up and saw it weaving through traffic with its lights flashing. before i could even respond, he started gushing, “the fireman drives it to help people and put out fires! They wear helmets and boots and have hoses to spray water!” honestly this was so shocking because we haven’t really talked about firemen at home yet.. it turned out he had learned this from one of the apps (Kiddopia) which had i installed on the ipad and somehow it clicked with him.

It made me stop and think… maybe not all screen time is just “mindless” after all. I’ve always worried about balancing entertainment vs. learning, but moments like this make me wonder if the right kind of apps can actually stick.
has anyone else had their kid surprise them like this?