I don't think it's as simple as you imagine. Any time you're delegating a task from someone who has double digit years of training to someone who (perhaps) has

I don't think it's as simple as you imagine. Any time you're delegating a task from someone who has double digit years of training to someone who (perhaps) has only a couple, you are likely (but not always) increasing the probability of error, and errors in this domain have real consequences. This includes potential for malpractice lawsuits because "the lazy doctor had their nurse doing all the work".