Guess which government doesn't want you to use end-to-end encryption
From a privacy point of view, there is much to love about end-to-end encryption, as employed by the likes of WhatsApp. But while users may delight in the knowledge that their communication is free from surveillance, there are some groups that have a different opinion.
Law enforcement agencies have long-complained that E2E encryption stands in the way of investigations, and serves to complicate evidence gathering. Many governments are of the same mind, and it's not just those that are traditionally regarded as totalitarian by other countries. Governments from ostensibly democratic countries are opposed to E2E encryption, and some are using underhand tactics in negative PR campaigns.