There literally is a machine that can ticket everyone equally. And it gets called unfair here because the poor and rich both have to pay 100$. Yeah okay, I get the sentiment, proportional fines all the way. But...
"The roads are too poorly designed, everyone speeds here!" is no excuse. If the road design tempts you to sin, you shouldn't drive. Ignore the bigger picture, you're moving 3 tons of steel faster than your eyes can process, take some responsibility for ensuring no one dies because of you. Drive a safe speed, which is the only speed everyone can agree on, which is the speed limit. Driving "what feels right" is not safe. You aren't the one driver who can get away with this.
Yes, traffic engineers share the blame, and on a political level this is where you need to improve the situation. But on an individual level, like this anecdote about the authors random fine, the individual is to blame. Its not a scam by the government, you messed up.
And asking for the traffic cop back is just asinine. How on earth do you think this will be any fairer, them letting most speeders through and then fining "randomly selected" individuals?