When a moderator views the history of a user, there is no indication of when the user has been blocked from posting a question or answer. This includes users blocked for repeated low quality questions, for multiple deletions, for IP bans, and for questions that do not meet quality standards.
This would be useful in certain cases. An example recently came up in the mod queue, where a user completely changed the content of their question.
I would have guessed that the user was blocked from posting and so re-wrote a previous question, but I was unable to determine if the user was blocked by reviewing their history. With this information, it would be possible to handle the issue better, such as pointing the user to related posts on meta.
The moderator who contacted the user was unable to know why the user did what they did, and so could not say more than "don't do that again" in the moderator message.