I think you may find that the API Manuel uses doesn’t offer first activator but just activators. I remember specifically having to craft a SQL query with post processing by the C# DB app to get the 1st activator by looking at QSO times out of the oldest logs for the summit.
I can guarantee you that we don’t want to change the display because the MT’s inboxes will be overflowing with people upset they have to share first activation with others after they were listed as first for a long time (20+ years) in some cases. 
As it stands we have both, one showing the true first and one showing all on the first day.