No it’s not just you that notices this. Most, at least 90% have some sort of social dysfunction, see it every day when I’m in the city. The visitors with families/couples seem very normal. It’s the guys with their holiday gf or wife that are freaking over the top weird, it’s the Hey look at me because I’m insecure syndrome. About 10% of the westerners I meet and talk to are capable of well rounded conversations and are polite and respectful. Also some western women age group 30-45 ~30% seem a little off, millennial chick tough dude syndrome.