Is it ever possible to let anonymous users to contribute on a wiki but there is no "require all contributors to log in" feature on the admin dashboard on my wiki and a wiki I'm on admin on. But on The Clash of the Titans Wiki https://clash-of-the-titans.fandom.com/wiki/Clash_of_the_Titans_Wiki (Even tho this wiki is dead) I found some anonymous users contributing to this wiki. Since there is anonymous users editing on this wiki I wonder if it's ever possible to get "require all contributors to log in" feature on a wiki.