Ph.D.s in anything other than maths or sciences are a joke. Anybody with half a brain can get one. It's just that most people don't have the luxury of pissing away four years of their life for a worthless degree like Chelsea does.
I have a sister-in-law who got a Ph.D. in Great Lake Studies from a state school. She now signs everything Dr. Sister-In-Law. Her Christmas card envelopes have a return address of Sister-In-Law, Ph.D. Meanwhile, I'm now working with a guy who has a Ph.D. in Organic Chemistry from Harvard. He's a guy who deserves to have a Dr. in front of his name yet insists that everyone address him as Michael.
It's pretty much true for Master's degrees too. I was required to get one because I am a public school teacher in Massachusetts, but my degree isn't even in the same hemisphere as a real one in science or math. Yes I wrote a lot of papers and read a lot of books and jumped through a lot of hoops, but I don't consider myself to have a real Master's degree.
When will we get to read Chelsea's dissertation? (Maybe it was written by one of the ghost writers the Clinton family keeps on retainer.)