Thanks for the informative reply! I have a couple of questions though.
Do you think that this is true even at a top program like Stanford? For example, even if an MBA is a fad, getting one from Harvard Business School still has value.
Also, are you saying that a PhD will allow me to better adapt to changing demand in the job market? Since a PhD will take 4-5 years anyways, it seems like if I wanted to go into a data science related fields after a PhD, I would be in an even worse position.