I think a large factor is how short the most recent volumes have been, that was mentioned earlier.
I waited until the release to read this volume, and saw 168 pages, so short, and was a bit sad. Then as I was getting all the fluff I was internally screaming "No! Not my already limited pages, they are all getting wasted!"
I'm not sure if we're now getting a higher ratio of fluff:progression. But feels that way to me due to the length of the volumes.