Is chocolate milk really that much less healthy than regular 2% milk? AFAICT they are basically the same, with the former having an extra 5g or so of added sugar per 8oz glass. It’s much better for you than, say, apple juice which is almost entirely just sugar.
I think the appropriateness of this criticism is highly dependent on subject. You can fit Maxwell’s equations on a sticky note, but most electrical engineering work will be learning how to apply those laws in a practical way. On the other hand, if you’re in an English Literature course and didn’t read the literature your class will be discussing, that’s on you.