While I can see the rationale behind the change (making pages cacheable for logged in users and anons alike), I have to agree that the result is rather confusing, particularly in the current Wikimedia environment with its hundreds of wikis and separate logins which expire separately.
I thought that we were moving towards having sections of a page dynamically generated and other sections statically cached, using ESI? If so, is there any reason not to display the login information?
All best,
Erik