Yes, but the training ends up converting to a license or title if you've completed it properly, and we judge whether or not a person is competent in that field based on whether or not they hold that title or license. For example, when quoting experts they're qualified as,"so-and-so is a board certified X," which is credentialism. But we have belief that the credential required training and knowledge, and that it was accredited by a board/panel of trained experts. But we trust those experts to be adjudicators of expertise because of their credentials. It's turtles all the way down.
I didn't call a "Board certified Physician" as credentialism. The previous commenter did. I never brought medicine to support my case against credentialism.
My comment is a response to the wording of parent comment, not the article itself.