My point was that for the intelligence services to get good intel they should compromise the devices of the people under investigation. Not ruin encryption for everyone, thus making it obvious to even the most daft murderous lunatic sociopath nutter that those devices cannot be used at all to communicate securely.
The extra threshold of having to do so also makes it less likely that we will all be monitored causally like in some 1984 scenario. (For which our technical capability is now way beyond what was envisioned in "1984".)