Lots of countries don't wash their commercially grown eggs (and have a much lower % from factory farms), which greatly improves shelf life in shops etc.
Iirc, it’s only the US and Japan that acid wash their eggs, thus stripping the natural protective layer, and require refrigeration.
Yes. It was quite a culture shock to see eggs stacked up in the middle of the aisle in Mexican grocery stores. I also find that, in general, Mexican store-bought eggs taste better and have a much darker-yellow yolk.