User blog comment:MisterWoodhouse/Social Activity, the 2010 Editor, and Unpausing Migrations/@comment-172.56.23.72-20201121230343/@comment-1038387-20201122123545

I think they mentioned 2/3 was to prevent abuse and harrassment across wikis. Nobody is entitled to that information.

5 is a security measure. Allowing it would facilitate hostile takeovers and drama.

6 There is no way. This has been explained. Wishing for it still is a pipe dream.