That does make sense for some units assuming the dates listed were prototype dates. But they indicate they are "battle ready" or more formal mass introduction/production dates, definitely not prototype dates. So the Solaris 7 stuff would fall into the category of "trying new tech in a Prototype mode", but not the other stuff. Maybe it's ok if the dates are brushed off as such, but I would think we'd want everything in the universe to be as factual as possible.