I think the feeble mind is the one that ignores an argument, attacks the one making the argument, and repeats the original line of thinking being argued against.
The suffix adds plenty to the base word. If the title was just "Resume Continues at Yahoo: Thompson Out as CEO, Levinsohn In" then it wouldn't be clear what was meant. Adding -gate makes it apparent that there was some sort of scandal involving something about a resume. While it's not the only way to express that information it's one that has been adopted as understandable by a large enough population. Also, while it isn't true to what Watergate originally was: It. Doesn't. Matter. Meaning is not static. I would say that it takes a good mind to accept and adapt to the constant changes of language.
And even further, you can't nitpick such a thing because you're guilty of it yourself! You used the word "orchestrated" in your post. The earliest origin of the word orchestra was used to refer to the area in a theater where the chorus was positioned. It has nothing to do with your use of it. You still used it fairly successfully though.