There should be a header on JoJo's Bizarre Wiki (1) similar to the
NIWA wikis that directs users to JoJo's Bizarre Encyclopedia (2). The
staff of JoJo's Bizarre Wiki announced in 2019 that they were
completely moving to JoJo's Bizarre Encyclopedia in 2019 (3),
specifying that they "plan to stop editing" the original Wiki, and it
is of lower quality due to that.

(1) https://breezewiki.com/jojo/wiki/Main_Page
(2) https://jojowiki.com/JoJo_Wiki
(3) https://jojowiki.com/Special:WikiForum/Leaving_Fandom

I am not JJBE staff and can't give you a message they would want
displayed there.

Thanks, this is great info!!!! Especially their "leaving Fandom" page. 
This action item is tracked here: 
https://todo.sr.ht/~cadence/breezewiki-todo/4