...any sort of public opinion research can be terribly skewed by how the questions are asked.
And that is why questions are very carefully crafted to remove bias when done by reputable and responsible research companies.
"Don't you think that Buicks are and old people's car?" invites a particular response.
But "Are Buicks for: people much younger than you, a little younger than you, people your age, people older than you, people much older than you" will not only get a more accurate response as the question and the answers do not lead the respondent.
And referring specifically to music radio, the more or less standard question for song research is "how much would your like to hear this song on the radio today?" 1. Not at all, I dislike it a lot. 2. Probably not. I dislike it a little. 3. I don't care, I neither like nor dislike it 4. I'd like to hear it. It's a song I like and 5 I'd really like to hear it: it is one of my favorites.
Properly asked questions are very neutral and deliver accurate responses.