"Going dark" is a scam - https://crimesciencejournal.biomedcentral.com/articles/10.11... for instance found that there was no difference in conviction rate for cases involving E2EE encryption vs those that didn't in the Netherlands. The government just wants the halcyon period of surveillance from late 1900s to the early 2000s back but these supposed tech savvy criminals almost never turn out to exist.
