The problem is "nations" don't represent the people in those nations, and those in power are just as capable as big tech in to relying on scare tactics and duplicitous messaging and misleading the populace in order to push forward their own agendas.
Fighting encryption has nothing to do with "saving the children", no more than all the misguided disastrous crusades against one thing or another over the past 50 years have been about saving the children.
I come from a place where in the 2000s the religious institutions through a hissy fit about certain music and subcultures and how they must be suppressed in order to "save the children". Fighting encryption may not be religious in nature but is born out of the same need for power and control.