This article is very naive.
Hard work doesn't get you a high salaried job, I have never once heard of anyone being asked about their hard work by a recruiter. However, a high GPA, having practical real world experience which yielded work product, knowing the right people, and having connections to wealth can get you that. This is just reality, it's the product of the capitalistic society we live in. I'm not saying it's good or bad, it's just how it is. Therefore, if pills can help with the GPA, with having the energy to create additional work product besides classroom work, and with having energy to network with "the right people" while carrying a full course load, then there will always be people who choose that path, and I certainly don't blame them. We live in a country where you either succeed at being a "producer," by whatever means necessary, or you you are considered nothing. Some people can be producers without pills, others can't (for whatever reasons, medical or otherwise).
In my mind the problem isn't with students abusing these drugs, it's with the fact that many students literally need to take them to have reasonable prospects at a middle to upper-middle class salary. It's no longer enough to get a degree anymore, student's need to be at the top of their class, they need a mix of real world experience in addition to extraordinary academic achievement, and all this is for the chance to work as an entry level associate for 80-90 hours a week with less vacation than any other laborer in the world, all while being ever mindful of the fact that you are easily replaceable given the current pool of available labor.
If you really have a problem with this trend you should have a problem with the "job creators" who require ever higher standards of productivity for their employee's, while blaming the economy for their inability to give cost of living raises, and of course they have seen their own earnings increase well over 200% in the past 30 years because as "job creators" they feel entitled to it. If you want a successful career these days you need to be able to work 9-10 hour days being as productive in hours 8-10 as you were in the first couple. Such energy and focus is NOT the norm. Yes, there are those who can do it through sheer will-power, and congratulations that you are able to do that, but most people can't. That is why I understand the need to use such stimulants, that is why red-bull, coffee, and other energy beverage industries have the success they do.
If you really don't think people should be getting jacked up on stimulants then perhaps your criticism should be directed toward those who require the modern professional to work longer and harder with less supportive resources without any compensation which corresponds to their increased efficiency, suggesting that they should be thankful they have a job at all.