Well, I think they asked the right people.
Unfortunately, in surveys, it depends on how the question was asked as to what response you get. For example:
"Do you think trout should be stocked over wild fish?" -- The vast majority, including myself, would say yes, for the simple reason that if you can think of only one example, the answer is still yes. Might as well throw an "ever" between "should" and "be." There's a handful of streams that have very poor populations of wild trout, perhaps only in select spots, but they are wild trout nonetheless. Those fisheries are only useful as a viable fishery if trout are planted. Oil Creek is a great example, it has a tiny, but existing, population of wild browns. Main stem of Kettle is another. Elk Creek in Erie County is another, there's some steelhead reproduction but noone would advocate putting a stop to smolt plantings because of it. Throw the Tulpehocken (I've caught wild browns below the dam), and countless others in this mix.
"Do you think trout should be stocked in the same fishery as wild trout?" -- The answer is most certainly yes and 99% of respondants who listen to the question would say so. First, anyone who answered yes to the first question would answer yes to this one, but the percentage of "yes" answers would be even higher. A fishery includes a whole stream, so if there's wild trout in the headwaters, an answer of "no" would mean you can't stock anywhere on that stream. An extreme example, but look at the Allegheny River. It goes through the progression from a small brookie stream, to a stocked stream with wild browns and brookies mixed (the only area debatable to whether it should be stocked, IMO), onto a medium-large stream completely reliant on stocked fish. Then below Kinzua Dam its a big river completely reliant on a stockings (fingerlings and otherwise). All of it is the same "fishery".
"Do you think adult trout should be stocked in sections with strong and viable populations of wild trout?" - Most would say no (I think/hope). Thats the real question all on this board were reading into. But is it what they asked? I don't know.
Basically, in surveys, how you ask the question makes all the difference, and unfortunately the respondant is more aware of these small language differences than the survey taker.