I have no direct knowledge of how we use that survey, but I suspect that an outlier such as yourself would not affect the results of the survey. If there is a wide-spread drop in quality, I think the survey would pick that up. It's hard to design the perfect survey though, but I'll see if the powers-that-be can improve the survey.
BTW one of the nice things about netflix is how well it treats its outliers :-) For example for ages I patiently filled in the "when did your DVD get to you" survey not expecting anything better being out in the boondocks (Hawaii) and them to my astonishment, Netflix opened a shipping depot in Honolulu.
And then there was the "multiple queues" incident where the company agreed to keep the feature even though only a relative small percentage of subscribers really used it.
