Not really something that a line guy like me can answer. Yes a lot of us fly the A330 very conservatively. EK training on the A330 calls for that approach. Have you considered asking EK management? Maybe your input would assist the trainers?
Personally I don't think the 330 is that hard to handle, provided you are not held high. Back in the A320 days we would, if held high, try to stay at idle by reducing speed until we were cleared for descent then increasing again, but that was a different time and place, and less traffic. I can't really answer your question.