An example of this falsehood? Well, in the 70s my father convinced most of my hometown, at least the portions between Main St and Wharf, that DST was absurd.
For almost an entire year, this was observed.
Do you think they kept record in tzdata? I tried to convince them, but no! I still have some dateplanners my father had printed up, and even a picture of the sign that was out on the road (to alert visitors!).
But no!
Do not trust the tzdata people. As you can see, they are not so accurate.