The old man wasn't offended by Kisha's blunt words. In fact, they reassured him. As a man who grew up as a farmer, he was accustomed to hearing such blunt and crude language from the other villagers. He could at least tell when someone meant to offend and when they did not.
But unlike him, who grew up in a village and only visited the city to see his son's family, his grandchildren were different. They were angered by Kisha's words, thinking she was looking down on them and expressing disdain for their perceived weakness and uselessness. The twins glared at Kisha, but she merely chuckled at their not-so-intimidating scowls.