That's a Catholic country, and in many countries, 15 is no longer a child. It is voluntary, and to presume that all countries should behave just as we in the United States is quite narrow minded.
In Spain, there is the running of the Bulls. There are towers of people, where children who are younger than 10 will fall 30 feet or more. Is this all child abuse?
You are speaking from a country (presumably the United States) where children are losing the meaning of family. Parents both work and farm their children out to strangers to care for them so that they can "provide for their children", when all they are providing is more expensive child care workers, more expensive clothes, homes and schools, but no idea of family.
Some children in the United States ride bulls and get seriously hurt. Some take part in BMX, Motocross, Mixed Martial Arts and all sorts of other activities in which they can be seriously hurt, but that's not child abuse. How many children are killed in drive-by shootings? How many are left to fend for themselves because they are LGBT and ran away from insensitive or abusive homes? In the United States, children as young as 13 are sentenced to life in prison for crimes committed so young, when those at fault are actually the parents and society for failing to properly raise them.
With all of this, people in the United States have the audacity to look on the practices of another country and claim that they are abusive toward children or primitive?
What you speak of in the Philipines is not Fundamentalism, it is traditional Catholicism as practiced in that country. It is something quite apart from Fundamentalism, which is quite anti-Catholic.
You have expressed contempt without investigation. This is called prejudice. You don't understand the culture. You don't understand any of the groups you are showing contempt for ... the Catholics, the Fundamentalists, or the Philipinos.
Maybe you should learn something about these people before showing such contempt.