ARM you posted about how you feel when you tell him that's not really what you want right now:
it really annoys me that he doesn't 'get this' or, if he does, that his desire at that point outweighs this
I think this is the problem.
He does get it, he understands but he knows that if he pushes it you will 'allow' him to 'do it to you'.
He definitely thinks his desire outweighs yours, which is why posters are saying that he is abusive/controlling.
He loves it, for reasons known only to himself at this moment but probably acting out some fantasy which he has not shared with you. Whilst he is doing it, he probably has a whole scenario going on in his head.
He wants no interaction from you, no interruption to the fantasy, to the point that he gives you a book to read as either a) your role in his secret fantasy or b) to shut you up..
Personally, I would take it off the agenda completely for a while. Tell him you've had enough for now. See how he reacts. If he accepts that and leaves it you know that he respects your wishes.
If he resists and/or goes on and on at you to let him do it, there is a problem.
Try it, see how he reacts.