As others are saying in this thread, I find myself disagreeing with almost every point the author makes about doing a PhD. I'm just about to hand in my thesis after 3 and half years of doing a PhD in theoretical physics in the UK. I've published 2 papers and have a third in preparation so I feel like my PhD has been 'good'. In contrast to the author, I've worked on my PhD no more than 40 hours a week, often less sinc…
The UK system is reputed to be far less abusive than the US system. The US system put me through the frigging wringer.
(1) UK undergrad programs are a lot more focused, so students tend to be a lot further along before they start a PhD program.
(2) UK PhD students are funded for a fixed time 3(?) years, and then you're supposed to be done. That doesn't always happen, of course—I knew students who went on the dole to continue once their funding ended—but the system is focused on getting them out in that period. In the U.S., on the other hand, there seems to be a lot more variability; we've all heard the stories about CS grad students that take 10 years to get their degree...