There are normal-discourse statements in which vacuous truth plays a role, example: "I've never met a Frenchman I didn't like, but then again, I've never met a Frenchman". This is, of course, a joke: and it relies on the fact that we assume the set "met a Frenchman" will have contents, but we recognize that, due to the negation, the empty set is actually valid.
But it doesn't work the other way around: "Every Frenchman I've ever met has become a good friend, but then again, I've never met a Frenchman". This isn't funny, because the second clause makes the first clause into a lie, as truth is normally understood. This is not a place where we colloquially accept an empty set.
So the puzzle posed translates the English sentence into logic badly. It isn't the conclusion which is counterintuitive, it is the logical analysis which is flawed.
But it doesn't work the other way around: "Every Frenchman I've ever met has become a good friend, but then again, I've never met a Frenchman". This isn't funny, because the second clause makes the first clause into a lie, as truth is normally understood. This is not a place where we colloquially accept an empty set.
So the puzzle posed translates the English sentence into logic badly. It isn't the conclusion which is counterintuitive, it is the logical analysis which is flawed.