I find the comments about someone not being confident enough to say "unable to comply" quite worrying. I understand them, but students should absolutely be being taught that they are the pilot, they're in control, and whily they're flying nobody can make them do anything which they feel is potentially dangerous. If some ATC asks them to do something which in their mind could be dangerous because they're too inexperienced to perform it safely, "unable to comply" should be the first thing they think of. Better that than to attempt it and risk death. It then becomes the ATC's problem, as it should be!