Note - this is completely different to "There are no review queues available to you" - Hey?
I accessed Programming Puzzles & Code Golf Meta today while browsing the main site and clicking on one of the Hot Meta Posts.
My attention started to drift, and wandered over to the top-bar, and on to the review queue button.
I didn't know what reviewing privileges were available to me, so I clicked on it, and...
That was pointless. I know I haven't been review banned, because I have never reviewed on PPCG Meta.
I don't have enough reputation on other sites to confirm this behaviour, and I don't know whether it's a result of Code Golf's different privilege system, which is why I haven't taken it to main Meta.
Could the help centre or some other helpful item take the place of the review queue button?
One possible rationale - new users who don't know much about the review queue may think that the button is useless and ignore it even when it does do something.