Nah, the way ants can find their way around has been a favorite question of mine, and I know there's been a ton of people over lifetimes that have had curiosity about how exactly they navigate the world.

This answer, that they do count steps, makes more questions though. How do they count? Is it some kind of chemical reaction? Is it memory, are they counting in a way that we would recognize at all? Like, they could be fancy versions of those click counters bouncers use to keep track of how many people are up in the club, just some kind of chemical or mechanical tracker. It could be other methods that I can't think of because I know jack spit about ant biology at that level.

Reaching the specific question from "how do ants navigate" to "are they counting steps" isn't a big gap. I'm kinda surprised it took much time to get there tbh. Not sure when this experiment was done, but it's way easier than detecting pheromone trails or whatever else has been done.