I'll copy and paste my reply given in a later forum.
"It appears to be creator error. I write down the changes as I make them and I will not intentionally leave out a rule change.
In early design and testing I had given Theodora Industrious as a bonus to the human and Masonry for the tech. My reasoning was that seafaring would have a very minimal effect on this map. It appeared to make things too easy, so I removed it. When I was preparing the final save, I noticed it was still popping up on the splash screen at start. What I found was that I had only removed the tech from the scenario settings. So I went into the rules and apparently unchecked seafaring instead of industrious. Thus the 2 movement curragh and the faster worker. The techs themselves are independent of the civ traits. I completely missed the clue that the worker was completing tasks faster than normal."