Yeah, it's too bad the Sanctified is merely a keyword and not a defined rule in the same manner as Imperial Agents.
If you just make something a keyword, you have to put the exception clause in every subsequent rule that references it. If they had made it a rule instead, it would would automatically apply in relevant situations unless there was text present that said it did not.
This was obviously a mistake, and I expect it to FAQ'ed relatively quickly.
Even so, whether or not I decide I want this book will depend more on Goonhammer's review of its narrative content than this supplement.