Not clear right now if France thinks he was actively complicit with the four horsemen listed, or if just the act of running Telegram makes him complicit in their eyes, or something in the middle, e.g. they asked for help and Telegram turned them down. This will be an interesting case to watch -- I don't believe there are any western nations that want non-locally-backdoored messaging of any sort -- but generally my un…
But here's the thing. If your app is known to be uses heavily by criminals ranging from Pedo's to drug dealers. You are liable. You run a carrier service. Much like the owner of omegle found out, yes you do have a duty of care. You can't just provide a service that knowingly provides a platform to criminal activity and do jack shit. You live in fairytale land if you think you can.
There is a principle in the free world that one is not criminally liable for the speech of others. This is the principle that allows ISP's, newspapers, web forums, Google, etc. etc. to exist. You demand that the principle be violated and the Internet be destroyed. I disagree.