No, not sure. The headers sure make it look like it came from them, and the first 6 or so pages of questions were what I'd expect (spending habits on fishing/hunting/camping). Then all of the sudden, this.
I emailed Cabelas asking if it was legit. Haven't heard back. My feelings are that it probably is, but the company doing the survey (opinionworld.com) has some employee getting a kick out of his additional questions.
They're not trying to sell anything, and no personal data is gathered before these questions come up. If it is a spammer, all they are getting is verification that an email address is active.