I also think that film music much more than other music is bound to the context that it is writen for. And there is a lot of film music that is even bad or boring in context, some is brillant or at least servicable in the movie context and then there is a small amount that even manages to shine in its best moments outside the movie context.
Once I thought, that this view isn’t very controversial. But then I met film music fans hunting for complete archival releases of relatively blunt scores.
These are probably the once that felt really hurt by Williams’ statement.