Charter man,
What a load of crap! The American crew would have been used to slick, efficient.....Like you, a Brit I assume, go back and insure the load after you checked thru the entire loadsheet, then when you have time check that the overseas territories are running up to speed.
Been to Shanghai many times on MD-11 and I assure you the loading staff is efficient and professional. Rather than interfering with them, I make sure my American ass is ready for the next departure.