Has this changed recently?
Has this changed recently?
But I don't think that's done with most science PhDs. Is that because of a culture of exploiting cheap labor?
It's not just a culture; there is a lot of government and industry grant money funding (and enabling) the exploitation in the sciences. If applied philosophy is found to be productizable and/or beneficial to National Interest, the same exploitation would grow in Philosophy departments.
This paper https://dspace.mit.edu/handle/1721.1/93208 gives and estimate 87% PhD holders leave before becoming (tenured) faculty. And that's academia-wide. In the sciences more will be leaving. In exact sciences yet again more.
Truth is most people leave before even getting a PhD, so it's even worse (and the advice is to think long and hard before doing a PhD, and certainly starting one because you can't find a job for a few months is sure to result in disappointment)
i'd be interested in a source for this. i did not find in the article you cite mention of historical trends.
However there have been a couple of long term trends: Switch to gig economy for college teaching, and loss of manufacturing industry. My first job out of grad school was in a factory.