When a Western newspaper writes in the English language for a Western audience, isn't the most important thing to make articles clear and easy to understand? I understand that it's also important to respect the culture and language and the background of the person that you write about, but I guess unless you really want to have the Japanese characters in your English newspaper, it's a trade-off.
I live in Japan, my children are half-Japanese (with my foreign family name), but I have to say it'd be weird to see an article that writes about, say, "Tom Smith and his daughter Smith Hanako". Similarly, reading a Japanese text, seeing "トム・スミスと娘のスミス花子" (tomu sumisu to musume no sumisu hanako) would feel weirdly inconsistent.
I live in Japan, my children are half-Japanese (with my foreign family name), but I have to say it'd be weird to see an article that writes about, say, "Tom Smith and his daughter Smith Hanako". Similarly, reading a Japanese text, seeing "トム・スミスと娘のスミス花子" (tomu sumisu to musume no sumisu hanako) would feel weirdly inconsistent.