You say it was perfectly obvious, I say it's almost impossible for someone steeped in iOS development to understand any way other than the way I said. Even given a huge amount of charity to the poster, the best I can do is "I have no idea what they mean by this."

How come we have to give this person the benefit of the doubt to the point of understanding a term to mean its exact opposite, but you don't have to give us any of that?

I think it's just a "my environment" bias thing going. I don't work on iOS and I immediately understood what was meant by the comment. Of course, the "my environment" bias may also include a degree of the "other" is not as bright as me.