VoidCat
Use any and all pronouns including neo and it/it's
One the add ons I've saw that xenoforo allowed at one point(not necessarily RF just in general googling), its unmaintained now, is the ability for a staff member to log in as another user. This was a limited ability when it was maintained as in you have to have a specific reason in order to access it else the software wont grant you permission to.Yeah, none of the active staff (i.e., the volunteers) have access to the forum's database or any other part of the backend.
If there's an add-on that lets staff read PMs, it's not one that RF has.
Unmaintained - Login as User
This add-on gives privileged users the ability to login as any other user on the forum (as long as they're not whitelisted). Key Features: Permission controlled - choose who can login as another user Whitelist - define users that cannot be...
xenforo.com
So i reckon with an add on its possible but i can't really see staff on RF spying on people like that in the pms unless they had a really good reason like if a user was known to harass folk in pms.