>why answer honestly with Canada’s level of restrictions and penalties?

Surely you jest. Polls are anonymous. And even if the security is bad, nobody is scrutinizing IP logs of poll respondents. Maybe in Kazakhstan or something, but freedom in the West has not fallen that far.

People do lie on polls, of course, but it's usually about self-expression, not self-protection. I'd imagine that vaccinated truckers are more likely to report antagonism to vaccine mandates by lying about being unvaccinated vs. the reverse.