Watching small children mess up basic language and counting can be adorable from an adult's perspective, but cooing over their mistakes instead of helping them along can ultimately hurt a child's development.
Children deserve grace, encouragement, and good humor while in their state of non-stop learning, it's frustrating and overwhelming to be a small child constantly absorbing new information. But there's a big difference between giving a child space to make mistakes in the learning process, and completely neglecting to guide or teach them along the way.
On the other hand, there is a modern obsession with pumping children with academics at younger and younger ages. This has caused a surge in parental anxiety over the "performance" of kids as young as five and has fueled neuroses around how fast children are learning, even when they're just getting the hang of existing outside the womb.