Coaches job: getting athletes to perform well.
Anorexia: leads to not performing well, injury, hospitalization, quitting the team, death.
I fail to see how anorexia IS NOT something the coach should have to deal with if he wants his athletes to perform well. I don't expect every coach to hold their hand and personally help them with issues like this - but fine, cut them from the team, direct them to someone who can help them. ENCOURAGING them to not eat and allowing it to happen is just showing them that there are a lot of a-holes in the real world like himself. Sure, there are, that doesn't mean you have to be one too.
And, losing a few pounds is probably not going to help their performance that much - they'd be better off a few pounds heavier than anorexic. It is not the coaches job to tell girls to lose weight. Any idiot knows that you don't want to lose weight in the middle of the season anyway. These coaches are trying to get their job done, but the problem is that they dont know anything about physiology.