That is mostly untrue. It all depends on the chickens' owner and how they interact with their birds. If you spend half the day bent over and chasing your chicks in order to pet them when they aren't in the mood, or force feed them the latest internet treat, then you're going to have some very skittish, flighty or skeptical birds. If on the other hand you spend a couple of hours per-day sitting on a tree stump or lawn chair and interacting with you birds in a reasonable manner you'll have birds that anyone can catch. I should add "that anyone can catch them at least once."
I have recommended Leghorns of every shade and hue for their athletic build, and foraging ability. All the posters without exception argued that leghorns are to mean, to flighty etc. OMG, but some on here must believe that the fence mentioned earlier in this tread was to keep their leghorn chickens from raiding the neighbors dog pen and flying off with and eating the neighborhood drug dealers' pit bulldog.
Alpha Centauri to Earth, Come in Earth.
Every chicken in the universe has been favored tucker for both man and beast for so long that today there are no chicken breeds anywhere that will willingly cozy up to humans, you must earn their trust. A chickens' trust can't be purchased for love or for money, but especially for money.