One factor in the difference between the United States and Europe may be less accurate information in the United States.
Children with gender dysphoria need help. But transgender treatments for them are not based on good evidence.
The pituitary gland produces hormones that stimulate the ovaries in girls and the testicles in boys.
Lents studies rotting corpses and household plants. He might not know much about (living) human physiology.
In all of his “poor” design arguments, Lents inadvertently embraces the design inference.