New visitors are often uninterested in the cultural aspects of the country, and show no inclination to observe its rules of etiquette. Overcrowding is also a problem on public transportation and at landmark sites
I mean sometimes you're going to faux paus no matter what. I studied Japanese for years, was tired after the flight there and jumped on my phone too let family know I was ok. That's not cool on a bus. Some lovely women pointed to the sign, I apologized, they giggled I giggled it was fine.
But we know these tourists don't do this stuff at home. Stop it.
And if you do act that way at home keep to your god damn self and watch your tone. It's a foreign country not a kids' science museum.
Worth pointing out that the majority of tourists in Japan are in fact Japanese, at more than 80% of tourists. Next largest group are from Japans closest neighbors in East Asia. Its a minority of a minority that cause all the problems.