You would think that these people will do it right. After all, being arties, they go into great detials on their work and you would think they would catch their error.
There's nothing about being an "artie" that means you're held at a higher standard. It just means you know how to make lines and curves look like something. For example, all those color profiles you see online and in books? You have to take those also with a grain of salt. That's just somebody, somewhere, putting together what they think something looked like. Depending on their references they may be miles off. In fact there are a number of published books with demonstrably wrong profiles for all kinds of planes.
I even did some for Battle over Germany (a scenario) for myself and some other pilots:


Note I explicitly type out what it was for so that years down the line they didn't turn up on some other website being passed off as a historic profile (it happens!)
So, as you can see, if I can do it, anybody can. They don't all put thought into the details or the accuracy of the way canopies open, etc.
Sorry for the tangent, back to the thread!