These last 40 or so chapters have done enormous damage to my perception of JJK, Gege and his writing.
It seems like he has run out of patience and desperately wants to move on to the next thing.
Longform stories just might not be it for him. This final battle should've began 300 chapters in at minimum, but probably best around 400-500 range. There's far too much context that was left on the cutting floor, it's like getting a watered down drink. More milk than oats. It makes for a very disatissfying final chapter to end the series. I have it around 6-7/10 but it should've been higher off the strength of the cast alone.