This has nothing to do with sex or being born, it is the normal age where children learn they aren’t the center of the universe. That is what is stressful for

This has nothing to do with sex or being born, it is the normal age where children learn they aren’t the center of the universe. That is what is stressful for them… the idea of independence is scary. There are other childhood development phases such as edge detection physics that make parents bonkers. How many times do we have to pick up spoons from the floor before they just understand that stuff always crashes to the floor when knocked off a high chair?