So, I did some testing, and I was a bit hasty -
The issue is only with the review entry for approving new users - the email address and the custom user fields do show up (but not for Moderators since the Moderators view emails setting is disabled). However, we only use that feature on our dev instance and not on our actual forum, so it doesn’t affect us in the way I had thought.
Our dev instance hadn’t actually had any flagged posts, so I thought the fields in the approvals entries in the review queue was universal for all items. After testing a flagged post, I can report that the email and user fields don’t show up for those.
Thanks for all the work on this! The review queue is super great after exploring it more, and I’m excited to launch it on our (actual) forum!