No, you are correct - arco players need the curve to be such that the angle shift with the bow needed to change strings is constant across the board, whereas pizz players are more interested in a consistent feel. This often translates to arco bridges being rounder and also needing the strings spaced a little wider apart.
In the video, Ken holds up his bridge template (a photocopy of Hank Strobel's ) and you can see that he's crossed out where Strobel printed 'Jazz' and has re-labeled it 'Orchestral'...![]()
Interesting... it was always my understanding that arco setups typically involve greater curvature. That's been the direction they've gone as I switched from being a mostly-arco to a mostly-pizz. player. As for the video, I feel fortunate to have had the luthiers I've had throughout my playing career. For me, anyway, this was a bit like watching someone do surgery with a pocket-knife as opposed to a scalpel or laser.
Is it reasonable to move a soundpost that far without re-shaping the end that meets the top?