I'll try to express my point from a different angle. If E2EE were unavailable for adults, it would probably be easier for law enforcement to investigate sexual

I'll try to express my point from a different angle. If E2EE were unavailable for adults, it would probably be easier for law enforcement to investigate sexual abuse cases in which adults are the victims. But, it would also prevent adults from enjoying the security and privacy benefits of E2EE and the protection E2EE affords against having their messages intercepted (which is something advertisers, hostile governments, and other adverse intermediaries regularly do). Many adults would not trade away the ability to use E2EE in exchange for a more empowered law enforcement. Child sex abuse may be a more severe crime than adult sex abuse, but aside from how certain crimes are sentenced, E2EE benefits children just as much as it benefits adults. Before arguing that E2EE should be unavailable for children, I would consider whether the argument holds up if E2EE were revoked for adults as well.