1) Are Private forums visible to all logged in users? I thought for sure it restricted access to only moderators and keymasters, but when I did some testing I noticed they’re very much visible. I didn’t see anything about it in the Layout and Funcionality article, so any tips on having a truly private forum for me and my forum staff?
Hidden Forums are only seen by Mods and Keymasters. Layout and Functionality article is basically a code snippet collection not something explaining how bbPress works.
The information you need to know are somewhat in here.
https://codex.bbpress.org/getting-started/configuring-bbpress/creating-content/
2) I wanted to prevent users changing their display name, so they would be forced to display themselves as whatever their username is, however, when editing form-user-edit.php they still had access to do so in the WP-Admin. Following the steps in Restricting access to WP Admin did nothing. The WP Admin Bar was still visible, and Participants or lower still have access to it.
https://bbpress.org/forums/topic/deny-ability-to-change-display-name/
