1H50m is plenty of time for a connection in HK. Take a poll of the members in this forum and see what they say about a 1h50 connection at CX's home airport.
Your bag didnt make it, stuff happens. Nothing to do with your self alleged "famed customer service" of the airline. There never was "famed customer service" to begin with so that's all your fabrication. Your panties are just in a bunch because you didnt get your bag. There was no utter negligence here as you claim. Feel free to fill out all the forms you want and they'll be processed according to the laws which Cathay abide by. and US10k for 2 tickets ? Par for the course really... dont think you get any special star on the wall for spending 10k.