@afransen is on point above. Whatever one's position on the Island airport, and its a fair thing to consider/debate........(either way)
A survey of 2,000, or so in a region of 10M......that would be 0.02% of the population.........with a vague question......."do you have a favourable impression of the airport".........
As opposed to "Given a choice, would prefer to see 200 acres of centrally located land near downtown devoted to an airport whose traffic is a tiny fraction of Pearson, or would prefer 200 acres more parkland?"
There's room to consider the result something less than definitive, in terms of public perception.