That's not really what he was getting at. Why do we need the test servers for such a minor patch, and who the hell will test half of those changes anyway? Who would go to the PTR with their raiding guild, just to test the hit box in the final phase of HC rag? Infact the real ID changes can't be used on the PTR anyway.
The point is, this PTR is ... strange, and effectively pointless. They have changed more than this on-the-fly without the PTR.