It's just that poster's opinion. I didn't really felt like anything was being dragged out....anymore than it already has, at least. If anything, we get a lot more changing scenarios. Perhaps that gives the impression of the author not knowing what to do next? But I didn't feel the scenarios were out of place.
I can only call the latest arc a little weird and drawn out, but that's a stretch since it's not finished. And it's after quite a lot of other arcs, so I just can't agree with this opinion. The bulk of it was even taken up by the mentioned Nyau relationship which they praise...sounds to me more like they forgot most of what happened after this part of the story and when.