That's the other end of the spectrum. Those "convoluted" educators seem to have a desire to show students that they aren't worthy.
At one point in my career as a comp sci instructor at a community college many students were copying the lab assignments, changing a few details and submitting them as theirs. Given they were all doing the same very small coding assignments the solutions were similar, but when I had to give feedback one multiple copies of the same odd constructs it was obvious the students were borrowing from each other.
I decided that I would no longer be concerned about how the students learned, but whether they understood the material. For grading the assignments I would sit in the lab for 5 minutes and ask them questions about their solution. The questions were
1) Tell me what the problem was you were asked to solve
2) Show me the general steps your program goes through to solve the problem (in code this is generally not linear, but bounces around the code)
3) Point to a tricky bit and tell me why that caused more thought/work
4) Suppose I asked you to modify the code to do X. Point to the places in your code where you would have to make changes (again, this is often in more than one place so you have to understand the flow.
Students could borrow code from other students (if they felt they learned best from working backwards from solutions). They could watch other students do their demo (if they felt they learned best that way) so they knew the questions (which got changed a bit each time). They could give wrong answers as long as they were able to correct their responses. If their demo was a disaster they were allowed to retry (pass/fail) but they were told not to test my patience.
I told the students that the more time I spent in a demo, the more I was worried about their ability to write similar code in an exam setting, so I was not trying to be mean, but rather trying to use the demo as educational time to improve their mark on the exams.
Just prior to the exam I would walk them through the previous year's exam and show them how I approached the solution. The students could bring in all the material they wished, including the previous exams. When I gave the exams I watched to see that the best students in the class finished about halfway through, which gave the other students a reasonable time to finish. The most common complaint from students who failed was "I didn't have enough time", which was code for "I spent too much time looking for solutions in my reference material because I didn't really know the material and hadn't practiced". Amazingly, bell curves were still the norm.
In pretty much any field, if you're good at your job, you know within about a minute whether others in the same field are also good at their job.