Undisciplined

I'd liken it to scales practice for musical instruments. It's not necessarily worth much in and of itself, but without that foundation you won't be able to advance to the highest levels of proficiency.  But by that same token, scales practice may not be the best use of time for most instrument learners.

SimpleStacker

econ

There's a New Sheriff in Town

There's definitely value to it, but most of undergrad STEM is just applied algebra. 

I think that's a disservice to the various disciplines and it's not the most valuable skill or knowledge to take from any of them.