According to a magazine article (October 2011 issue of "DIME"), Japan ranked 27th in the average TOEFL score ranking of 30 Asian countries and regions. Singapore came in first, followed by India. South Korea also ranked highly. Even North Korea reportedly ranked within the top 10. The only countries with lower scores than Japanese people were Laos, Tajikistan, and Cambodia.
The fact that Japanese people have the lowest English proficiency in the world has long been known.
Even young members of rebel and terrorist groups living in the mountainous regions of Central Asia speak fluent English during interviews. In Southeast Asian, South Asian, and African countries, highly educated people are almost always fluent in English and French.
Chinese, Taiwanese, Hong Kongers, and Mongolians may have slightly inferior language skills compared to South Koreans and North Koreans, but their proficiency is incomparably superior to that of Japanese people.
Even when watching live broadcasts of international sporting events, Japanese people are probably the only ones who feel isolated and unable to communicate. Even in soccer matches, when players are being substituted, non-Japanese players converse casually in English with the referee standing nearby, and in other sports, players are often seen on television communicating in English with players and staff from other countries.
The problem is the justification (excuse). Many Japanese believe, and this has now become the accepted theory, that "Japanese people love to study and are a hardworking nation, and Japan is a country of qualifications, but fortunately, Japan was not colonized. Therefore, unfortunately, they cannot speak English."
The truth of the above theory is uncertain. However, I believe that it is not a matter of "colonial rule," but rather that Japanese people have inherently, or organically, inferior linguistic abilities.
I would like to explain this in more detail at some point.