>Randi dedicated his time and energy to debunking shysters.

A lot of people informally call Randi himself a "shyster." But if you mean "shyster" in a legal sense, the only "shyster" Randi spent time and energy on was Deyvi Orangel Peña Arteaga.

When you say "shyster" you are using loaded, ambiguous language. A scholar would define his terms more clearly. You are probably referring to people like Uri Geller, who are semi-public figures that make money by making claims that are hard/impossible to verify through respectable channels. You might center your definition of "shyster" on Uri Geller or some other public figure.

I don't want to put words in your mouth. I would truly love to see your definition of "shyster," and refer to the professional community that accepts your definition. Then I would ask the professionals why Randi himself does not fit the description of "shyster."

If you believe (first) that people like Uri Geller are shysters and (second) that Randi made the world a better place by harassing people like Uri Geller, you can provide a definition of "shyster" that can be referred to the appropriate professional body -- perhaps the American Bar Association or the I.C.E.