True, but his explanation remains largely bullshit.
What was the point of moving him to a limited series if he'll write just a book a month (which is how I understand his statement) ?
The answer is none since Batman could have simply become monthly with King at the helm. But higher ups did the math, felt worried about his plans and shipped him to a limited series, freeing their main non-event seller book or someone who won't consistently destroy this corner of the DCU.
I know that you don't want to believe that it's what's happening, because it doesn't fit your narrative, but that's how i see things, and no amount of "explanations" by King will change that.