I'm not sure what you're saying, or how it is not what I'm saying? You're giving examples of places to read documentation, and I'm saying that the expectation was that behaviors caused by not checking documentation would be your fault. If that isn't your experience, cool, it was definitely mine when posting on forums online 15-16 years ago.
Why wouldn’t it be? If you were in charge of writing a letter and use words that hinders the purpose of the letter, thus resulting in a flawed communication, wouldn’t it be your fault? Especially when dictionaries are easily available?