I agree with the author, the lesson really is to take the documentation seriously. I think a lot of people might not be in the habit of doing that, because they

I agree with the author, the lesson really is to take the documentation seriously. I think a lot of people might not be in the habit of doing that, because they find the documentation of many projects lacking, or because it’s easier just to read some walkthrough where the work is already done and they can just copy paste the commands. It’s important to fully understand what you are doing in all cases, not just ones touching cryptography.