They also can’t testify in court, depriving accused speeders of their constitutional right to due process.
But back to your first claim: “gotta enforce speed limits:” No, we do not. Speeding is a symptom of a street that was designed wrong to begin with. The correct solution is to fix the design, not install a speed camera as some sort of big brother band-aid.
Edit: why do y’all apparently hate the idea of improving street design? As a former traffic engineer, I’m telling you that that’s the only way to truly fix the problem of speeding. I don’t get why that’s controversial.