I don't think it should be removed, because many kids are very curious. They often ask some abstract questions and don't want to deal with inherent atheism, nihilism and anti-aesthetism of internet (or real life???). I don't want to deal with such aggressive opinions, because dealing with them means being brainwashed. Kids should express their faith and not let others ruin it. Internet is free speech primarily.
I think that if a child has a strong political position, but can't vote due to age policies, then it's a very right place for him.
You know, politics and religion are things that are very sensitive, and even adults may get insane if someone hurts their faith.
The hate can't die by hate, but only with love (Buddha)