I understand user account is necessary to join a forum.
Members with good reputation, of course, often have a good name associated with their user name.
However, other members may have prejudice against minority of member by their user name because of their characteristics in the past. Those affected members have asked to have their user account deleted or anonymized.
E.g. A member might stop replying to a particular member if he disliked him.
Why not put discussion first before people?
A forum without username might be a silly suggestion. Any thoughts on how to discourage “preconception” on certain members by their user name and list of activity on their profile?