It's a cathay epidemic disease. I've lost count of how many times I've been sitting next to one like this tool you described crying on the radio and attempting to lecture ATC only to end up getting a new butthole manufactured for him by the controller and showing how little situational awareness he has and how out of his comfort zone he is. This is equally true of Aussie, Brit, and even the Canadians. They think they're the center of the universe and all should make way for them. What's professionalism? Not having a clue about the airspace procedures of the country you're flying over is certainly lack of it. This is true of very senior checkers and managers just the same. Clueless about how things work in the congested, busy and complicated airspace over the US is an understatement. They get their a$$es handed to them for acting like self centered children after making requests and demands that only proves how clueless they are about their surroundings and how the system works, ALL THE TIME. They're used to being able to demand special treatment and get their way with Manila control etc... and don't realize that coming across as feeling more special than others in the US will only get you harsh treatment, to be fair. You can't call the US ATC unprofessional if you don't know how the system works by making it obvious with your irrelevant and stupid demands and making their job harder as a result having to explain how it is to you over the radio.
Example:
If you don't know how much you increase a controller's workload by refusing to call traffic or airport in sight and accept a visual approach in very visual conditions when everyone else is doing it, and then not realize why you're treated not so good and calling the controller rude... you're clueless about your surroundings. You wouldn't like it if someone made your work harder either.
If you're asking Vancouver control to change your filed arrival clearance into Anchorage and can't understand why that's a stupid request to make and keep insisting and force the controller to treat you like a clueless amateur, you can't call him unprofessional or rude.
If you think that as a pilot you have the big picture on what's going on at a place like Chicago, Dallas, LA, JFK during busy arrival times and try to second guess the controller such as attempting to vnav descent according to your fantasy picture in your head and cause problems for the approach controller and get your ass handed to you, don't complain, you deserve it.
Oh yeah, and learn to talk and hear fast. Multiple instructions in one transmission and reading them back just as fast. Try harder chap, you can do it. Slow and inflexible doesn't cut it here. United flies the same big iron as you do and they keep up just fine.