Don. I'm afraid I am unable to refute any of the stories told above. I can relate to and have experienced each and every situation I have read so far.
The 'CC on the mobile on the crew bus out to the aircraft while being briefed' is an age old chestnut. Thankfully, most of us are clamping down on that now. It does, however, typify the lack of respect from the junior crew - unfortunately, especially/mostly the HKG CC.
As far as kicking them off - that would really cause a stir in CX. With the punitive culture that is prevalent, the Capt would not come out very well. Additionally, the CC culture is also very punitive and there is a 'report anyone' mentality. And along with that goes a certain fear of kicking ass in case that very junior crew decides to report his/her head purser for any transgression. If there is one thing CX is good at, instilling a fear culture is it!