Polls do have limited value, but the way this was presented was also hearsay. The man didn't say what the poll questions were, how they were styled, or even who performed the survey, all of which matter.
Of course, I care about what people of any age think, but I don't care about what groups of people think because people don't think as groups. They think as individuals and no demographic can be nailed into one position on anything. He could have said a poll was taken about what Baby Boomer's think about the internet, or Gen X, or Millennials, and I would care just as much.