Iíve never had a stranger give me grief about using film. Probably a good thing, since I imagine I would not react positively to a stranger commenting on something that was none of their business.
However, I was at a park one time and was placing my camera case and tripod in the back of the car. Some guy on a bicycle (tight shorts, helmet, you know the ones) rode up, screeched to a halt and immediately launched into a description of his new whatever-it-was and its quantitative characteristics and the size of his lenses. When he finally came up for air, he asked what I was shooting. I opened the case and pulled out the RB67, and suddenly size-is-everything boy was late for his cycling event.