Really Monad? I always pegged you for being a bit more civilized. And while I agree with most of your points, ridiculously aggressive though you were in stating them, the torture scene with Erza was an issue because it was far more extreme than any fanservice prior to this in the series. In one panel, it even looked like that demon bird lady (please don't try to be clever by correcting me on her name, I am capable of looking it up myself) was fingering Erza. With claws. I'm still not entirely convinced that that was not intentional.
It was also the way the fanservice was shown. Sorry, but as a feminist (yes I am please spare me the typical uncreative and uneducated insults such as feminazi and moralfag, forever alone dyke lesbian and what have you) and, well, as a human being, I'm not too cool with fan service being in the form of a torture scene, especially with a character like Erza and especially in a series like Fairy Tail where for the most part, it's all sparkles and sunshine.
And, again, I say this as an ENORMOUS FT fangirl. Fanfiction, fanart, cosplay, blah blah blah I've said it all before.