The original post of this thread doesn't make it seem like a thread that's supposed to solely be on the subject of where chip and signature cards are accepted overseas.
It seems more like a thread educating Americans about chip cards in general. Americans have every right to complain about signature priority cards... It should be as easy as possible to use a card overseas and not have to worry if your card will work because it doesn't like using PIN authorization.
People don't understand why America looks like the laughing stock of the civilized world today... It's because of many reasons, including cards that are behind the rest of the world in technology. We don't always need to be "different" than everyone else, especially when it's a less modern version of what everyone else has.