We could all do with remembering that even jazz has its share of 'entertainers' and that often, during its heyday, there were bigbands that relied more on showmanship and 'antics' than on sheer musicianship and introspection.
For every genre I can think of, there are giants and midgets, and everything in between. It isn't really fair to put ANY particular style or genre down because the majority of who we have seen may not compare favorably with our favorites..!
_________________________
An arranger is just a tool. What matters is what you build with it..!