The goal is controling the flow of information online. "protecting the children" may or may not be a sincere concern but ultimately censorship is what is desired here.
Read about the infamous EU's chat control and lobbying behind it: https://mullvad.net/en/blog/mullvad-vpn-present-and-then
It doesn't take a computer genius to understand the broader implications this has on civil society. If they genuinely lack the insight to comprehend this, then they certainly wouldn’t be using children as a shield.