I agree that most people wouldn’t opt for that, but most tourists also don’t behave like that. The vast majority behaves very well, they are somewhat aware of Japanese manners and try to adapt (sometimes in sweet, dorky ways, but who am I to judge, I probably look the same).

There are a few people who do this and they ruin the image for everyone.

The issue is not the infrastructure, really. It is excellent and in excellent condition, across the country.

Imagine you have perfect toilets, some even designed by star architects, free to use for everyone and clean. And some fucker just decides to take a dump in someone’s garden, for whatever reason. Is that the problem of the infrastructure?