There's the aspect of rearranging knowledge but also the distress that lies in dealing with difficult aspects of reality. Right now many people deny human caused climate change because if they didn't they'd see themselves confronted with a bunch of uncomfortable changes and difficult problems.
It's not just "oh, this thing I believed to be true is actually untrue" but also "ahhh now I have to deal with a bunch of overwhelming issues and the stress that comes with that"
This has nothing to do with children. It's a proposal by technologically inept people who argue that encryption needs to be removed but encryption is so basic that it isn't really feasible to do so. You can make the access harder but that is only an issue for your average joe. Individuals with criminal energy who this is supposed to be about will continue to encrypt their communication while regular users will give up their privacy.