brodiejlb:
I went to a pub the other day which offered "traditional English fare" and I selected from the menu steak pie and chips. The pastry was golden brown, the gravy thick and rich and the steak firm but tender, the chips were crisp on the outside and light and fluffy on the inside, just how I like them. As I came to the end of the pie I bit into an acid hot jalapeno chilli. Quite spoilt the meal for me. Now if I were to post this on the Perfect Pies Forum, I don't think that I would find replies telling me 'that's just your opinion' or 'if you don't like it don't eat it' particularly constructive. I know it's my opinion because I wrote it and the point was that I was eating it and liking it and finding it particularly satisfying until I was ambushed by the unexpected heat bomb.
So in this hypothetical case, you would've been a clearcut victim of blatantly false advertising, since "traditional English fare" wouldn't include any "acid hot jalapeno chilli," would it?
However, are there that many Library stories which explicitly claim to involve only 'moderate' and/or 'realistically appropriate' corporal correction? As a reader you might assume, based on a particular story's setting, plot line and/or characterizations, that a certain type of spanking will be administered within it, yet there's no guarantee of your assumptions being accurate for any given story.
These are fictional accounts, after all, and some of them undoubtedly involve fantasies of quite severe chastisements which might arguably be unrealistic for their described situations, meaning that there's no reason to expect punitive realism within them. Also, let's not forget that even in real life, there are numerous spanking recipients who can endure, and even sometimes desire, extremely severe bare-assed blisterings.
Of course, a reader is free to remark on a specific story's perceived degree of credibility in its "comments" section, but obviously an author may or may not be influenced by those remarks. (Personally, I do attempt to respond to specific commentary on my stories via 'pop-up' messages to those readers who've made them, yet I still might not be influenced by their comments in my future writing.)
That's my analysis anyway...

--C.K.