[lucumo]

> Unless they are not reading it, or properly paying attention. [...] Sometimes it is on the user.

If they make no effort, sure. But looking for an answer to a question and finding something that seems to works is a perfectly reasonable way to use documentation. If there's a dangerous gotcha and it isn't documented right there, then the documentation is structured badly.

> Or following an unofficial document

That could be a very clear symptom of bad documentation.

Sometimes it's on the user, but if lots of users are failing to use your documentation, maybe consider that the documentation is bad.