Yet it doesn't mean you can sex smol children, because that's a physical threat to the child's health. And that is a crime.
Second, they don't have an age of consent because they might have chosen to have religion substitute for the legislation. Islam doesn't allow children to marry until they reach the sort of adulthood we're talking about,,, as you can see, ejaculation isn't determined by age,,, you might have never cummed til age 18 and you might have done it when you were 9,, so that's why Islam only uses the term adulthood, and doesn't specify an age.
In both cases, whether you do or don't follow religion,
you cannot marry by force, and you cannot marry people who are too young to understand what's happening and consent to it.