Somali did much more than just disrespect, e.g. deepfake pornography of women he met, trespassing onto construction sites, throwing food in businesses.
Not sure how it's work in japan, but many of these things require a formal criminal complaint in my country and people are not used to disrespectful people.
Saying that it's the issue of a country is wrong and to simple minded.
Japan has a stricter legal system than many Western countries.