Yes, but this article of the Charter (and other laws) does not prevent lawful interception.
This is the crux of the issue: the so-called "pro-privacy" camp wants absolute privacy of communications.
Law enforcement and intelligence services are not against privacy, they are against systems that provide absolute privacy because these systems prevent even lawful interception.
Voice calls on your smartphone are private but may be lawfully intercepted. This is so because mobile networks are in the hands a few licensed and heavily policed operators. On the other hands, we've reached a point where it is simple to develop and publish software apps that allow anyone to communicate in a way that is impossible to intercept as far as we know.
This is not a simple issue. There is a valid concern but at the same time the potential ways to address it (e.g. backdoors, etc) are not very satisfactory.