Not sure about neg rep, but I see you edited out the word "stupid" from your original post.
I have been playing D&D for 39 years, and as other die-hard PnP players will tell you, these terms have NEVER been used in the context you describe. (See the quote below from ddoplayer.)
Sorry people, I had no intention of reposting here, but as I read these posts, a response was warranted,
In PnP you'll see notations for "Pure Class" in DDO when capstones were released, the term "True" was implemented by the devs. Either way is correct.
Great feedback on the thread.