As a former Ph.D. student and now graduate, I would have to say the title is is not sensationalist at all. This aspect of the tax plan will raise additional funds (to at least partially offset the magnitude of the revenue reductions). Where do you think those funds are going to come from? They come from the graduate students who will now be taxed on these tuition waiver amounts.
It is extremely facile to just waive arms and assert that, somehow, the schools will simply get around the issue by changing their accounting. If that were the case, why would this even be in the tax bill?