In fact, it's never been unusual for Hall of Famers (Jeter, Rivera) and
perennial all-stars (Damon and Posada) to excel at or beyond 35.
Hey rsmdpa -
You're right HOF-types like Jeter and Rivera (and, I think, Posada) are outliers and so tend to defy the common wisdom of age curves. As do all all of the first-ballot players you name. Johnny Damon, however, is not one of those players (nor is Godzilla, for that matter). Very good player, frequent all-star, but ... as a center fielder. He put up a career year - numbers comparable to way back in the KC days, when he was 26 - when he was 35. Not incredible, but a bit unusual. Marchman seems to be registering the peculiarity of the YANKEE$! getting premium value from a guy in the last year of his contract and on the downside of his career.
One way of tweaking Marchman's piece would be to say, simply: Wow, the 2009 WS Champs won with a surprisingly large number of elite first-ballot HOFers very much on the wrong side of 30 - Jeter, Rivera, and Rodriguez (plus Posada - not first-ballot, but HOF in my opinion). Plus they had some peculiarly great contributions from good but not historically great players. How often has that happened? Well, that last bit's not a tweak, more of an indication of the direction in which I'd have liked this piece to go.
The takeaway comes at the end of the piece - the Phillies are far more likely the dynasty-in-waiting (Yankees ca. 1997?). Imagine the cries of snark had he opened with that gambit.