These rules are not as strict as one might think, especially when they’re tied up with people’s careers—consider the reproducibility crisis for instance.
I am actually following a course right now. Self paid. It costs roughly USD 1000 to follow and is done by a renowned University.
The lecturer just released an exam which is utterly unreadable. He is not a native english speaker. But there are several grammatical errors. The progression is bad, etc. He introduces non-existing terms (Like innovation application) and is incoherent.
Obviously the teacher did his best. But i really think it begs a question to whether that is good enough.
People should not be doing things they are not competent at.