Here's why you don't want it to be taboo for humans to explore their sexuality openly before a certain age: They are all going to do it secretly with their phones anyway and so whoever controlls that tech is basically going to know everything about every child on earth and can groom whoever, whenever they want, pretty much without consequence. So either everything is freely in the open for public scrutiny, or a subset of humans (humans are predatory) are going to have massive power over the most vulnerable in society, without the rest even knowing about it due to ignorance, and they will be able to shape the future generation in their own image without the consent of the rest of wider society, or even the ones being groomed/manipulated.