I wrote it there, but I will write it here as well.
It's really recent that I entered Wikibooks, but I can't help respecting the results of those activities by looking at past logs.
Wikibooks is not an active project compared to Wikipedia, but it is not a depopulated project like Wikinews and Wikiversity. In my opinion, Wikibooks is the project with the strongest connections between users. In this way, it is only Wikibooks that makes one user saddened to retire.
At some point in Japan, hoping that one day, when Shitara returns to Wikibooks, two reasons for retirement are being dealt with and that Wikibooks will be better, one day. --雪津風明石（トーク・投稿記録・全記録・統一管理）2020年5月5日 (火) 03:56 (UTC)