Anything in the same sentence as "aids predators" throws context out the window and marks it as a vile and awful thing to anyone listening. Don't use that language, and don't let someone lead you by the nose into using that language.
Instead, talk about how end-to-end-encryption improves the safety of all users, including children, because it gives them control over who sees their messages, and shields them from criminals who would gladly snoop and steal their personal data. Banning or breaking encryption will not make children safer. What will make them safer is parents supervising their young children's internet usage, and teaching them how to protect themselves online when they're older - how they should avoid giving out personal information (e.g. to Facebook or Instagram...), how to lock down access so only their verified friends can talk to them, etc.