If so many people are quitting and/or warning others off the path, there may be a good reason why.
This especially stands out from the article:
Academe is a profession full of erudite free-thinkers who feel disillusioned by a toxic labor system in which criticism is not tolerated—so those who leave often relish the newfound ability to say anything they want (talking about “a friend” here). In its insularity and single-mindedness, academe is also very similar to a fundamentalist religion (or, dare I say, cult), and thus those who abdicate often feel compelled to confess.
"A fundamentalist religion:" if so, each heretic who saves someone else is doing important work. If enough people do so, the message might get out; it certainly has for law schools: http://www.nytimes.com/2012/03/20/business/for-lsat-sharp-dr....
Anyway, it does seem like academia has grown increasingly exploitative along many measures, especially for workers and grad students. The more people who know before they start, the better.