Perhaps some groups want to ban encryption to get more information, for example to force politiceans to resign. That is to know small bad things about people to make them resign. For example Madrid President (*), or Dominique Strauss, or Monica Levinski case. Many people rip off their clothes in outrage when their minds are conveniently manipulated. Getting information for pouring shit into your political adversary, who is going to ban that before banning encryption?

https://www.theguardian.com/world/2018/apr/25/madrid-preside...,

https://www.theguardian.com/world/2012/dec/10/dominique-stra...