So Jackie Robinson and Derek Jeter are analogues now.
I think Posnanski is mincing words. Jeter's legacy is entirely impacted by playing for the Yankees. Not only is it the media issue, it's the fact that the Yankees happened to be consistently great for the first 3/4 of Jeter's career. Look at the talent that Jeter's had on those teams, both due to a good farm system and because of the Yanks taking advantage of their massive payroll.
And that's not his fault, bully for Jeter. He certainly made
the most of it. And, obviously, he had no small part in that success. But because Jeter's emergence coincided with the Yanks renewed dominance, and because he's a "role model", and because he's good looking, and because he played SS (regardless of how well he did so), the Press and fans conflated the correlation of Jeter's presence on those winning teams with the notion that his presence caused those teams' successes (or, at least, was a far greater cause than he really was). Faced with a lack of objective basis, believers turned to "intangibles" and "playing the right way" and all that, which only reinforced the correlation/causation fallacy.