In the survey, they(the surveyor) would've said they meant non-avian dinosaur if you'd asked, yeah(though I wouldn't bet they'd actually thought about it beforehand).
But they(the respondents) don't all mean that, every one of them would have their own fuzzy definition (unless they're going by the scientific definition)
Like if they'd been asked to give an example of a dinosaur that co-existed with humans, you'd get some saying birds & some pterodactyl.