The problem with this argument is that it presumes that your manager agrees with the film director - programmer analogy and shares an understanding of film making that would reveal the practice to be bad in that context.

There are good arguments (and, IIRC, even a bit of research) on why continuous blocks of time are much better for efficiency of programmers; and meetings for them should generally be minimized and, when necessary to have, coordinated to avoid breaking up work blocks as much as practical. But that particular analogy is close to the worst way to make the argument to most bosses.