@Punmeister I think you puzzle rating is artificial so it it is very bad example. Why?
Extreme people not explain behavior of whole people population. It is wrong to focus on extreme anomalies if you solving problem.
Perfect or good solution of any problem can be NOT PERFECT - I mean that some problems is not solvable fully.
You are right the most of PEOPLE not read and vote down valid puzzles because they not understand puzzles. You will not change it since it is normal.
Keylock in door can be always get around, same with doors but it takes time to do it.
So if you cheat you can be punish with 20 puzzles to do and 5 unrated games - next times 40/10. It is not problem get around but it takes time.
You are RIGHT that what is determined it is easy to be get around.