I think it is required because it conveys information. My objection to simply using the term "tarot" without qualification is that it hides information from the reader even when the context of the article is clear. It is also biased in a sentence such as "He taught the basics of tarot" This sentence is very POV. What constitutes the basics of tarot?  If you don't like the term "occult tarot" an improvement might be "He taught what he believed to be the basics of tarot?" I am on the same page with you though on proper linking so that is no longer an issue.