Earlier quoted context omitted.
This is what I've heard from my friends living in Japan – people are sick, but the government is refusing to test them because they want to keep the numbers down so the Olympics don't get cancelled. But other threads further up pointed out that even with massive under-testing, it should be hard to cover up a COVID-19 outbreak if it spread exponentially as expected – there would be reports of hospitals being overloade…
If the government has such strict criteria for testing, might it also not have implemented strict 'stages' that you must proceed through after a diagnosis? And a further, stricter criteria before even allowing hospitalisation? My other suspicion is severe cases will try their best to hold off on self-reporting given the strict government testing criteria and lack of awareness/panic. This is one key way that Japanese…
And if they _weren't_ turning away life-threatening cases, you'd expect reports of hospitals stretched far beyond capacity.
There really aren't any other plausible explanations than "Japan actually has significantly fewer or less severe COVID-19 cases than expected". It would have to be an implausibly massive cover-up.