Alright this is a lot to wake up to. First and foremost, I wish Gege the best, and I really hope that he takes this break to recharge and feel better. The life of a Mangaka is not an easy one, and some people are not able to handle it as well as others. He apparently didn't want to take this break, but the editorial department really pushed for it, so I hope that he doesn't kick himself over this.
As for the chapter itself, I am disappointed that Naoya is dead. I was hoping to see more from him. Gege kills characters he see no further purpose for, so I guess he didn't think there was any more use for Naoya after he got beat by Maki. Maki's mother being the one to do it is a little weird. I'd imagine in a full chapter, we would have gotten like a flashback on her before she does it to like show that she always hated the men of the Zenin clan or whatever.
I'm curious about this Chief of Jujutsu HQ though. I don't think we've been told about the structure of Jujutsu HQ.