Purest BS and absolutely unnecessary gatekeeping.
Yes, this is also what I thought when I read Ix Chel's post. It is like saying you can't paint without an art degree or you can't write a story without that sheepskin.
As others have said, there are plenty of folks with even multiple degrees who severely lack in "common sense" and other types of intelligence. I work at a University Police Department. I've been a Dispatcher there for over 30 years. Believe me, I have a lot of experience with people with high levels of education who would fall on their faces from tripping over their shoelaces if they didn't tie balloons to their ears. Don't get me wrong, I have a great deal of respect for anyone who can devote the time and effort into getting that degree ... but you don't need one to be a good, even excellent Tarot reader.
I personally do not have a degree, but I have a lot of life experience. Keeping an open mind and caring about people are better qualifications, along with intuition and an ability to communicate with others. There are some degrees that might help a person to be a better Tarot reader, such as psychiatry, philosophy, education and so on. But let's not forget that, to some extent, higher education tries to train your intuition out of you.
That isn't to say that being a good Tarot reader doesn't take study. For some it comes pretty automatically (such as the 3-year old that Gregory told us about), for others (such as me) it takes a lot of study and work to become fairly good. One can do readings with fair results by taking the meanings straight from the LWB and applying them to the question being asked. But there are also myriad levels and depths of meaning one can find with extensive study of the history of the Tarot, the various esoteric and philosophical symbolisms and magical systems involved. None of this requires a PhD in ... well anything.