Yes, I know the angle of the story. I think the writer's assumption that he'll "age extremely well...defensively" is fairly suspect.
My point is that the Sox probably don't believe that that's true. Defensive metrics are innately fuzzy, but DRS and OAA are generally better than ZIPS, which does not pick up the fact that most of
Bogaerts' defensive gains came when he was positioned to the first-base side of second base, a defensive positioning that isn't possible anymore.
ZIPS isn't regarded for its defensive projections. I wasn't even sure that system made defensive projections. Szymborski, the writer, developed ZIPS and has to stand by it. But my argument is that the Sox probably don't see him as a shortstop even though this analyst apparently does, which puts his overall offensive projections in a different light.