Why do people get this confused so much ? It works both ways guys , you can set it to be able to bend or you can set it to not respond to bends, it's that simple. Either way you set it your guitar will stay in perfect tune...
The point in setting it to not respond to bends is so that you can play tight rhythm on a recording and not worry about your fingers possibly moving the strings ever so slightly out of tune. It would come in handy when playing very modern tight metal rhythms that does not have bends. Wouldn't be the best set that way for blue's rhythms and 80s rhythm stuff that has bends within the riffs but you have both options available.