Ah very interesting. Thanks for making that distinction! To me, I’m wondering at what critical mass of people should you need to provide a back door to the government? Is it 2? 3? 100? 1000? Are the number of people the right indicator here? Genuinely curious of people’s thoughts. I haven’t though too deeply about this.
There is no need for backdoor anything, when there are public channels.
I do not know the specifics of French case though, so I don't know if their case is about those or some private chats.
You seem to assume there is a “need” to backdoor the people’s communication. Liberty of the people assumes there is not a need nor a right of the State to do so