If I have, my deepest apologies. I was watching some American news program with footage of body bag after body bag. Of course, such footage could come from anywhere in the world (including the US) and does not even need to be Covid related.Sorry to interrupt, I believe you've confused Japan with China. I'm assuming this is an honest mistake from someone not familiar with the Asia-Pacific region.
Japan's approach has always been similar to the stricter Western countries (masking, quarantine requirements, the same internationally recognised vaccines as everywhere else), with regulations loosening gradually over the course of the pandemic as less virulent strains took over. Postwar constitution prevented the government from enforcing hard lockdowns, only 'strong recommendations', but people were good at following them. Casualties have been quite low, comparable to Australia or Taiwan.
China had draconian measures (>3 weeks border quarantine, locking down entire cities) from the start of the pandemic until just over a month ago. It also didn't permit importation of foreign vaccines or recognise the vaccination status of travellers with them, and its domestic vaccines are ineffective against Omicron. When it became politically unsustainable they made an abrupt U-turn and lifted all restrictions without the necessary support measures (increasing healthcare capacity, effective immunisation) and got a huge wave of infections and deaths.
Yes, Japan is now taking a more relaxed approach to Covid, but only after a gradual route to recovery, just like most of the world. I don't know if they still have the rule on not cheering at competitions.