This thread is a shining example of why Cabin Crew, are Cabin Crew. And Pilots are Pilots.
Funbags, if you think CSM's think they run the show, you're probably right, in some cases (I've never come across it), but definatly not all. But so what? In the end, if it pisses you off, put them in their place, that is the Captain's job. They haven't changed his/her title. Because that what they are, the Captain. At the end of the day the Second Officer is higher ranking that the CSM or "onboard manager", whatever, if they step too far, just a quick word in their ear is all that is required. The majority are great people, but they probably have better things to do than post on pprune.
In truth, when we are doing what we really do, the Cabin Crew are safely strapped in their seats. When they bring things to the flight deck, we are, in general, not doing what we really do, so you can understand their ignorance as to what it is that we really do.