The article 'Children Need to Play, Not Compete' by Jessica Statsky emphasizes that competitiveness in sports has negative impacts on the development of children's mindset and emotions in the United States. The author highlights the lack of motivation, physical injuries, and negative emotional effects caused by competitive sports, especially for children below 10 years old. The article encourages parents to protect their children from these harmful impacts and instead focus on playful games that promote skills and attitudes of sportsmanship spirit.