You could just as easily argue that if more students study engineering its hurts those currently in the industry, that alone is not a reason to be against it.

You could just as easily argue that if more students study engineering its hurts those currently in the industry, that alone is not a reason to be against it. You're so wrong. The whole purpose of bar exams and similar certification requirements in most trades is to limit supply. Almost every profession does this in one way or the other, except engineers.