Aesmael said:
Primary purpose is to protect mental integrity and privacy.
Where does it state that?
Everything about the spell indicates that it prevents your mind from being affected AND it prevents anyone from divining anything about you (you are even non-detected within Scrying type spells such as Scry or Arcane Eye).
People are attempting to make it mean that it prevents your mind from being affected and it prevents your mind from divulging information and it protects from Scrying.
But, it does not state that the information gathering limitation is mental only. In fact, it never once states that. That is a spin people are putting on it after reading the first sentence.
In fact, if you carefully read the spell, Scrying is mentioned later on in the spell as an afterthought to divination. Scrying is not mentioned as the core of the spell in the first two sentences. Why not? Because the second sentence covers divination and that includes Scrying.
Hence, it is reasonable that they then go into details about Scrying later on.
"In the case of scrying that scans an area the creature is in, such as arcane eye, the spell works but the creature simply isn’t detected. Scrying attempts that are targeted specifically at the subject do not work at all."
Look at how strangely this is worded with your interpretation.
Instead of starting out with something like:
"Additionally, Scrying does not work on the Mind Blank subject."
and actually mentioning Scrying as an additional effect, they start out with:
"In the case of scrying that scans an area the creature is in"
as if they had already been talking about Scrying. Why did they think that? Because they had. They already covered Scrying with the sentences "This spell protects against all mind-affecting spells and effects as well as information gathering by divination spells or effects. Mind blank even foils limited wish, miracle, and wish spells when they are used in such a way as to affect the subject’s mind or to gain information about it.".
As far as the author was concerned, he had not ONLY covered all Mind Affecting and Divination spells, but he also covered super powerful Limited Wish, Miracle, and Wish spells in the two cases of affecting the mind or gaining ANY information on the subject.
And that is why Scrying comes up as almost an afterthought. It was already covered except for the special case of area affect Scrying still working, but not detecting the protected character. It was clarification only.
I think people read the first sentence of "The subject is protected from all devices and spells that detect, influence, or read emotions or thoughts.", combine it with the spell name "Mind Blank" and go, "Yup, it doesn't do anything more.". According to what is written there (and according to the FAQ), it does.