I think I recall him saying somewhere he used it a bunch on Rockin' The Suburbs too, with, seeing how pretty much every song on that album has a nearly flawless vocal performance and is devoid of those signature Ben inflections., makes sense. You can use pitch correction and not have it be blatantly obvious like what we usually associate auto-tune with sounding like. Just depends on what program you use / how far off the original performance was.
That said, I haven't noticed anything egregious in So There.