But those cases are only saying that companies can't comply to disclosure requests. That doesn't say if the encryption itself is weak or if the user has to completely trust that company. Just like the Apple case, where a 4-6 digit PIN is basically protected by Apple's secret firmware and its signing infrastructure.
There is nothing worse than a messenger that is commonly called secure but actually isn't (like the current implementation at WhatsApp). Cryptocat already had a massive disaster related to this problematic. Known as the chat program for activists in danger, it had a mathematical bug that made it nearly as weak as cleartext. Another one: As long as people aren't always explicitly using Secure Chats, Telegram isn't more secure than WhatsApp and doesn't use any end-to-end encryption. Still hyped for its security. While secure clients can definitely exist, most of the famous everyday solutions are just FUD and bullshit.