Comment by AnthonyMouse

People are extremely opposed to pedos, so they're a primary rationalization for oppressive technology. But then you have two problems.

First, pedos know everybody hates them, so they take measures normal people wouldn't in order to avoid detection, and then backdooring the tech used by everybody else doesn't work against them because they'll use something else. But it does impair the security of normal people.

Second, there aren't actually that many pedos and the easy to catch ones get caught regardless and the hard to catch ones get away with it regardless, which leaves the intersection of "easy enough to catch but wouldn't have been caught without this" as a set plausibly containing zero suspects. Not that they won't use it against the ones who would have been caught anyway and then declare victory, but it's the sort of thing that's pretty useless against the ones it's claimed to exist in order to catch, and therefore not something it can be used effectively in order to do.

Whereas industrial espionage or LOVEINT or draining grandma's retirement account or manipulating ordinary people who don't realize they should be taking countermeasures -- the abuses of the system -- those are the things it's effective at bringing about, because ordinary people don't expect themselves to be targets.