IP editors cannot set page statuses to ensure the proofreading and validation is done by two separate users.
However, IPs are not shown any affordance that there is such a mechanism that they would be able to use if they were to log in. So I suggest there is a greyed-out status widget and a help widget to say "log in to use this!".
Somewhat related to Growth-Team, since it's also a small push to get registered.