Why Do People Act So Fake Nowadays?

Assalamu alaikum. I've been wondering, why do some folks from other beliefs or no belief keep bringing up old stories like the Banu Qurayza incident to attack Islam? They claim kids were involved, but they ignore how many were actually freed, including women and those who hadn’t reached manhood. Yet they stay silent about the suffering of children in Palestine and Africa today. If you’re so against kids being harmed, why aren’t you trying to stop what’s happening right now? They also never mention how children were used as soldiers in places like World War II. Honestly, read history and you’ll see how flawed humans can be-that’s why Allah created heaven and hell. They seem more desperate to paint Islam negatively than to focus on current wrongs or learn from their own past to avoid repeating mistakes.