No, not even close. There a dozens of usages. As the author says, "
TV Tropes doesn't get to set what the term means; the best we can do is capture the way it is used." There is no consensus on a precise definition and dozens of usages now exist. The article author does not, and does not claim, to able to say they are "not accurate".
There is no such thing, in any human language as "true meaning". All meanings are always the subjective creation of the people who create them. Words mean what we say they mean. New words get invented, older terms take on new meanings. "Rock" in English refers to a form of music, or a stone. IN German, "Rock" means "Skirt".
But if all this is a point blank refusal to accept the reality of changing word usuage, I will be happy to coin a new term. It will mean the same thing however.