I received a suggestion in my suggestion feed.
It said to remove "2nd Baronet" from the nickname field of a profile.
I did so.
I was later notified by a member that:
"Title such as "2nd Baronet" belong in the nickname field, not in the suffix field, per WikiTree naming rules":
I am happy to ignore such suggestions in the future now that I am aware of naming conventions for European Aristocrats. Could we please change the errors in nickname fields to allow for this naming convention?